I bought my N7 3G to use primarily as WIFI and only to use a 3G payg card in emergencies so I have inserted my SIM and turned off the mobile data.
However it still seems to maintain a connection to the mobile network and the standby battery life seems to be significantly shorter than my wi-fi only model.
Anyone had comparable experience or know how to resolve this (I have thought of removing the SIM to see if that makes a difference but a configuration setting/app would be nicer).
Did you turn on Airplane mode AND then turn on WiFi?
Seems as if you just turned of data mode but the cellular radio is still on. Might be worth looking into.
LordLugard said:
Did you turn on Airplane mode AND then turn on WiFi?
Seems as if you just turned of data mode but the cellular radio is still on. Might be worth looking into.
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That'll probably be the reason
Related
One of the big complaints from all published reviews is the lack of battery power - about 4 hours maximum. I have an idea I to present.
I have the T-Mobile version, but I use my S7 at home; in fact I never activated the device on T-Mobile. I think that part of the problem with battery drain is that one cannot turn off the 3G modem. The S7 automatically disables the connection to 3G when the WiFi connects, but the modem is still working (there is still a signal strength on the task bar).
From past experience with phones, that 3G modem drains a lot of power.
Does anyone know of a way to disable the modem itself? I'm not interested in rooting at this point, but maybe there is some setting I am missing?
If you load DJ_Steve's S7 ROM, there is a hack to disable the RIL. That gave me much better battery life.
I just leave mine in airplane mode with no SIM inserted, enable and disable wifi as needed.
First off, what's RIL?
Second, I've also heard that the cellular is trying to connect on the software side. Any truth to this?
I'm wondering how this tab might fare, battery-wise, with it not pinging for a cell signal and 3G (or 4G, depending on the signal you get, or both and only 1x active) off. Can you set it so only one radio is getting play? Also, can you set profiles so that one gets used over the other? Example:
Screen off = 2G only
Screen on = 3G only
Internet apps (such as browser and YouTube) = 4G only
Z4nd4r said:
First off, what's RIL?
Second, I've also heard that the cellular is trying to connect on the software side. Any truth to this?
I'm wondering how this tab might fare, battery-wise, with it not pinging for a cell signal and 3G (or 4G, depending on the signal you get, or both and only 1x active) off. Can you set it so only one radio is getting play? Also, can you set profiles so that one gets used over the other? Example:
Screen off = 2G only
Screen on = 3G only
Internet apps (such as browser and YouTube) = 4G only
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Click to collapse
One of the posts above indicates that he is using a hacked software version, and the battery life is indeed much better without 3G.
Using airplane mode would work if I was only using the device to read books, for example, but I generally use it for online work.
I think the replies confirm my suspicion that the 3G modem is drinking the juice. Not too much of a hassle since I keep it at home next to the charge cable, but (especially with that non standard charge cable) it will not be so good outside the house (unless one is using the T-Mobile 3G, but that takes $$).
daveid said:
I just leave mine in airplane mode with no SIM inserted, enable and disable wifi as needed.
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I use mine similar to this but I have a sim card in as well. I have a widget for airplane mode and one for wifi on my main home screen. I have airplane mode and wifi enabled most of the time but when I am out and need data (not very often) I just disable airplane mode for a short time.
This works well and the battery life is more like a minor inconvenience.
To do this same thing manually I'm sure juice defender ultimate should work since you could set up profiles for wifi, 2g and 3g (disclaimer: I haven't tested that idea but some people on this forum have juice defender ultimate and might be able to comment)
djUniversal said:
I use mine similar to this but I have a sim card in as well. I have a widget for airplane mode and one for wifi on my main home screen. I have airplane mode and wifi enabled most of the time but when I am out and need data (not very often) I just disable airplane mode for a short time.
This works well and the battery life is more like a minor inconvenience.
To do this same thing manually I'm sure juice defender ultimate should work since you could set up profiles for wifi, 2g and 3g (disclaimer: I haven't tested that idea but some people on this forum have juice defender ultimate and might be able to comment)
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The problem is that when the WiFi is on, so is the 3g. I confirmed this with my battery widget; 57% of the battery drain was due to the 3g modem IIRC.
stevedebi said:
The problem is that when the WiFi is on, so is the 3g. I confirmed this with my battery widget; 57% of the battery drain was due to the 3g modem IIRC.
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If you activate wifi by turning airplane mode off then the 3g radio will stay on in the background while you are using wifi.
If you turn on airplane mode then wifi you will only have wifi active. Just make sure that the airplane mode symbol is on in the top right beside the wifi icon.
djUniversal said:
If you activate wifi by turning airplane mode off then the 3g radio will stay on in the background while you are using wifi.
If you turn on airplane mode then wifi you will only have wifi active. Just make sure that the airplane mode symbol is on in the top right beside the wifi icon.
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Thanks, I will try it tonight! That should improve my battery life a lot. I'll report back.
Wow,
That worked great. I didn't realize that flight mode did not override all radios. Thanks for the tip!
Sent from my Streak 7 via xda app
daveid said:
I just leave mine in airplane mode with no SIM inserted, enable and disable wifi as needed.
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Click to collapse
This has also worked for me with the SIM inserted. I get great sleep times with new OTA upgrade left at default settings and keeping the S7 in airplane mode, unless charging. I only turn on wifi when I need it.
Also very important: if you're using the S7 only with wifi, turn background sync off from the power widget, when you are setting the tablet aside for some time. I believe this is where the battery drain actually occurs. If background sync is left on, the S7 continues to try to update location services and your various accounts, even though airplane mode is on.
I have "slept" the S7 (airplane mode with wifi off and background sync off) when I get to work at about 90% charge and come back to it at the end of the day at 75%, ready for the commute home.
Sent from my ADR6300 using Tapatalk
I'm coming from a Note 2 and I'm somewhat confused as to how this phone handles everything network related. On the note 2 whenever I would connect to wifi, my LTE symbol would disappear and show only a wifi signal, and I THINK the mobile data was switched off until the wifi connection dropped (I'm probably wrong). I also wasn't as concerned about battery drain with that phone since I had a 7600 mAh battery.
On this phone, regardless of if I'm connected to wifi or not, the cell data (empty "bars") logo always shows at the top. Now normally this wouldn't really bother me, except "cellular data" is using nearly 5x the battery that wifi is using. Are phone calls/SMS also tied to the same data stream/radio as the LTE? I'm on wifi for around 80% of the day. I didn't know if disabling cellular data would stop me from getting phone calls/sms. Again, I'm not sure with the note 2 if that was just a touchwiz feature or not, but I was wondering if there was some way to automatically disable LTE radio (if it isn't tied into calls) when I connect to wifi. Cell standby is my number one battery drain after the screen.
Cellular data is off when on WiFi. The only time you'd see it on is when a MMS is coming through.
Cell standby is just your radio connected to the tower.
So I am using a Nexus 6 on the Latest Tmo build (28E?) of Stock Rom and Stock Kernel Rooted, Encrypted.
Since the update that enabled wifi-calling for the N6 I have taken to setting my phone to airplane mode and turning on Wifi only to save battery since the signal at my house bounces back and forth from LTE to 3G and that murders my battery. Most of the time the signal strength graph shows blank and battery app correctly shows the cellular radios as having no on time. However, after being idle for a while (it would seem) the graph begins to show the signal strength as Red (no signal) and the cellular standby shows up in battery usage with the radios as being on (with no signal) and "active for a few seconds". Toggling airplane mode on and off usually restores them to showing up as off. Other times I never notice and it stays on for a few hours and goes back off on it's own. My main concern is that it seems to be activating the radio on it's own, my minor concern would be that my battery monitor app shows that it's using the battery. What could be causing this? I don't think it's a reporting glitch, because it shows up in both the system battery panel and a 3rd party one. If anyone has any thoughts or could point me towards a tool that could help me figure out what's turning on the radio when it's supposed to be off, please let me know. I've included photos from today showing what I'm talking about, the phone has been in airplane mode the whole time in these photos.
Thanks so much!
Kev
I think your issue is one of the reason why I cannot get Wifi Calling working at all. No matter what I do, my phone is holding onto a cellular network. Still trying to figure this out.
nautec said:
I think your issue is one of the reason why I cannot get Wifi Calling working at all. No matter what I do, my phone is holding onto a cellular network. Still trying to figure this out.
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The best I can tell, "Android OS" is the only thing that shows any mobile packets sent or received so it's got to be a system thing.
If you have the myT-mobile app installed try uninstalling it I found that app totally screwed with my Nexus 6, turning WiFi on when I had no desire to use it.
stevemw said:
If you have the myT-mobile app installed try uninstalling it I found that app totally screwed with my Nexus 6, turning WiFi on when I had no desire to use it.
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Unfortunately that's not the fix. I don't have that app installed. Tmo is sending me a new SIM as I am also randomly having Wifi calling drop in and out even while my wifi is connected.
Does anyone know any app that would let me see specifically what app is engaging the mobile radio?
Airplane mode disables all outbound communications however inbound ones are still discoverable.
I can receive calls in airplane mode...
Samg381 said:
Airplane mode disables all outbound communications however inbound ones are still discoverable.
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... I just joined to see why is my Nexus 6 receiving calls in airplane mode (and Wifi off...). It's a recurrent problem... everytime there's an update I have this issue...
Hello,
I've used my Mi A2 around 2 weeks now and I'm really satisfied with the phone. However, I got some annoying issue about wifi. When the signal strength of wifi is not so strong (below -70 dbm), it tends to disconnect for around 10-20 sec and then reconnected again. This happened to me like 10 times since I got the phone. And wifi works perfectly without disconnections when the signal strength is strong enough.
Does anyone experience this issue? Or I got a defected device?
Thank you
Same here, sometimes it just disconnects ...
Sent from my Mi A2 using Tapatalk
It is a normal stock android behavior, because android detects that signal of wi-fi is to low, and tries to switch automatically to GSM mobile data, or to another wi-fi if it is available in the area.
I don't have this happen but wifi signal is strong and also; gsm data is turned off.
That *may* help to turn that off possibly, as it obviously can't (now) switch to it?
minnuss said:
It is a normal stock android behavior, because android detects that signal of wi-fi is to low, and tries to switch automatically to GSM mobile data, or to another wi-fi if it is available in the area.
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Even if mobile network is off? Is there a way to change such behavior? I tried to find in the setting but what I just found is Aggressive WiFi to mobile handover, which was already turned off.
AsItLies said:
I don't have this happen but wifi signal is strong and also; gsm data is turned off.
That *may* help to turn that off possibly, as it obviously can't (now) switch to it?
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It happened both when mobile network was on or off.
Marciano09 said:
Even if mobile network is off? Is there a way to change such behavior? I tried to find in the setting but what I just found is Aggressive WiFi to mobile handover, which was already turned off.
(
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I think that it is called smart wifi, or wifi+ option in other types of android OS, and here it is just a automatic option in stock android i guess.
I don't mind it, because it will change my wifi router AP if it get stuck, and need an reboot, so it will automatically switch to another closest one that works.
You better think of some way to get a better signal then to turn off this function.
Try with aps like this on the link.
https://play.google.com/store/apps/details?id=com.seah0rse.swififree
minnuss said:
I think that it is called smart wifi, or wifi+ option in other types of android OS, and here it is just a automatic option in stock android i guess.
I don't mind it, because it will change my wifi router AP if it get stuck, and need an reboot, so it will automatically switch to another closest one that works.
You better think of some way to get a better signal then to turn off this function.
Try with aps like this on the link.
https://play.google.com/store/apps/details?id=com.seah0rse.swififree
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The thing is that wifi also disconnected when there's no other nearby networks to switch to. I did something to get better signal in my room but this still happened sometimes.
Does anyone else experience their pixel 5 deciding that a perfectly good wifi connection is "low quality" and using cellular instead?
I have this happen very often. Have at least 50% of the wifi symbol full on my fast home network (that nothing else struggles on) and my pixel 5 just labels it as "low quality" and switches to cellular. I normally just have to go to airplane mode and turn wifi on. Toggling wifi (without airplane mode) will get it to reconnect but it'll quickly do it again on occasion.
I remember in the past there was a setting for aggressive WiFi to cellular handover but that's gone now. Not sure if that would solve this anyway.
What are your actual wifi stats? Just because the icon shows 50% doesn't mean you actually have a good signal.
Gibsonflyingv said:
Does anyone else experience their pixel 5 deciding that a perfectly good wifi connection is "low quality" and using cellular instead?
I have this happen very often. Have at least 50% of the wifi symbol full on my fast home network (that nothing else struggles on) and my pixel 5 just labels it as "low quality" and switches to cellular. I normally just have to go to airplane mode and turn wifi on. Toggling wifi (without airplane mode) will get it to reconnect but it'll quickly do it again on occasion.
I remember in the past there was a setting for aggressive WiFi to cellular handover but that's gone now. Not sure if that would solve this anyway.
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count your blessings. in my experiences, android tends to hang onto bad wifi connections for faaaarrrrrrr too long. i'll be a half mile from the house before it finally switches over.
WaxysDargle said:
count your blessings. in my experiences, android tends to hang onto bad wifi connections for faaaarrrrrrr too long. i'll be a half mile from the house before it finally switches over.
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I wish that was the case for me. Mine will pick a single bar of LTE over my near full wifi signal. I've never had another phone do something like that. I basically have to use my phone with airplane mode on at home.
Unlock the developer settings and turn on verbose wifi. It should give you better wifi signal and band information to work with.