[Q] 3G doesn't work properly - LG Optimus 4X HD

Hello,
I've bought my optimus 4x on Amazon, an International version and Im using it in Brazil. My 3G connection doesn't work properly, if I try using it, it works for a while and then it stops working all the network, I can't make phone calls nor receive them. When I lock the screen it is showed that there's NO SIM CARD, and a moment later it works again for a while. I've tried using different carriers, but It's all the same. However, if I set my mobile to use only 2G networks, it works properly. Is that hardware or software issue? Any ideas to sort it out?
Regards

Related

no Phonesignal available since Update to 20070327_WM5_AKU3.3.1_LVSW_v1.24_WWE

Hello,
i got a Big problem, since i updated my trinity to 20070327_WM5_AKU3.3.1_LVSW_v1.24_WWE, my phone provider is E-plus ( Germany) and i got two sim cards, one delivered with the trinity (umts) and another gsm card. But with both i can´t get a connection to my Phone provider.
I also tried to install a rom, which has worked in the past DOPODASIA_WWE_1.23.707.6_6275_1.35.00.11_108_Ship and
HTC_WWE_1.23.405.2_103_6275_1.38.00.11_108_GPS but no success.
Only with the original rom, it will find a signal, but only for few seconds and then it disapears again, or it keeps changing from G to 3G and back, when the UMTS card is inserted.
But the connection isn´t stable.
In the meantime i tried all roms which i got, but none of the are stable.
By the way, the GSM card works fine in my other mobile Phone.
So it´s defently no problem by my provider.
Try manually disabling the 3g and using only GSM.
Thanks, it seems that this solved my problem.
But i´m wondering, it worked before with UMTS, that means that i got
3G on Top, in the past and didn´t experienced any problems.
But now not even with the original Rom without GPS, i can get a connection using 3G.
But nevertheless with GSM it works fine, i appreciate!
Try getting a 3g connection on an another phone and with the same provider because it may be a network/provider issue and nothing to do with your phone.
my other phone is a sony-ericsson k750i, so it´s not UMTS capable.
But i can try to switch back to umts later, to see if this is a provider problem.
thanks and regards

3g problem

hello. just wondering if someone has the same problem or any special advise. i Have a kaiser branded by vodafone, still using standart rom, and i have an issue regarding 3g. it seems that it is impossible to disconnect. the phone is using the auto functin to search for network, and has usual when he finds perfect network in 3g i have no problems at all. When 3g is not available and the phone auto switches to gsm it indicates perfect reception but i´m not able to receive or to make voice calls. i have tried the same sim card in other phones ando there is no problem when i switch to gsm only, so any sugestions?
This is something you should probably take with provider unless you want to void your waranty. If you are not bother about waranty I suggest change the firmware/radio. I use my on 3 network and on vodaphone and have had no issue like this at all. My firmware is Hyperdragon III. Hope it helps.

Unable to connect to 3G with Froyo on N1

I live in Japan, and use a Softbank SIM card from an iPhone 3G. For the past few months I have been running Cyanogenmod 5.06 with no issue, Yesterday I installed Froyo with this ROM.
bit.ly/9l3sBM
Everything works great minus connecting to 3G. In japan 2G is no longer used therefore I cannot even make a phone call.
I have checked and rechecked to make sure I am using the correct APN settings.
Any ideas? Could my carrier be blocking it. May it be a problem with the ROM? I did a sum check before installing.
I really would like to use 2.2 as its much faster and the battery life is at least 2X longer.
Thanks,
Brandon
So apparently there was an issue with my automatic cell phone payment, and once my phone disconnected from the network it was not allowed back on. I payed it, and it now works.
Unable to connect to internet with Froyo on N1
Hello !
I just installed froyo on my nexus and i cannot connect to internet (3g, 2g) anymore.
I have the same settings as in previous 2.1 (i asked operator for apn, user etc.).
Every other mobile device i have works with my sim.
Everybody have this issue ? My Nexus is useless without this....
Thanks

[Q] Please help me, no 3g, then no data at all

I bought nexus one from my friend.
I am currently using HD2 with 3g data.
When I plugged in my sim card to the n1, it only worked with edge.
So, I seared internet for some information and I found out something about "*#*#6436#*#*" and change the setting to WCDMA only. Then the phone got no signal at all, so I changed back to WCDMA preferred. Then I did ping test but it did not seem to work very well.
Then I played with some APN setting and I realized that I lost data connection completely (phone still working)
I have tried to reset the phone but no luck.
Can anyone please help me with the problem? I am using T-mobile.
Thank you.
Pull your battery, and look at the back of your phone. At the top of the dark area there are numbers, look at the PB or FCC ID numbers. If they end in 9110 then you have an AT&T version of the phone, and the hardware will not work with T-Mobile's 3G service...
khunny7 said:
I bought nexus one from my friend.
I am currently using HD2 with 3g data.
When I plugged in my sim card to the n1, it only worked with edge.
So, I seared internet for some information and I found out something about "*#*#6436#*#*" and change the setting to WCDMA only. Then the phone got no signal at all, so I changed back to WCDMA preferred. Then I did ping test but it did not seem to work very well.
Then I played with some APN setting and I realized that I lost data connection completely (phone still working)
I have tried to reset the phone but no luck.
Can anyone please help me with the problem? I am using T-mobile.
Thank you.
Click to expand...
Click to collapse
are you in the USA? you need to list your location. it is likely that you purchased the wrong version of the nexus one. there is an ATT version and a tmobile version. each only works with the proper 3G. so an ATT n1 on tmobile only gets edge, and vice versa. check which version you own.

[Q] Please help! Sprint One sim unlock, Always No service and won't auto reconnect

For the last weeks.. I have been trying to get this phone working with T-Mobile..I had unlock the sim card and now running badboyz 4.3 rom. 1.3
After unlocking the sim card and setting up the apn, selected T-Mobile from the available networks and it will connect. But when I go to work, I will lose signal every few block, and need to search for available network again and wait to select t mobile again.
I had try to use the t mobile sim card on my old phone and everything will works fine with no signal lost.
Can anyone please HELP!... I been searching and looking for an answer for more than 2 weeks..but no resolve.....
Thanks
Sim Unlock
lazybozz said:
For the last weeks.. I have been trying to get this phone working with T-Mobile..I had unlock the sim card and now running badboyz 4.3 rom. 1.3
After unlocking the sim card and setting up the apn, selected T-Mobile from the available networks and it will connect. But when I go to work, I will lose signal every few block, and need to search for available network again and wait to select t mobile again.
I had try to use the t mobile sim card on my old phone and everything will works fine with no signal lost.
Can anyone please HELP!... I been searching and looking for an answer for more than 2 weeks..but no resolve.....
Thanks
Click to expand...
Click to collapse
How did you get the SIM unlocked in the first place?
lazybozz said:
For the last weeks.. I have been trying to get this phone working with T-Mobile..I had unlock the sim card and now running badboyz 4.3 rom. 1.3
After unlocking the sim card and setting up the apn, selected T-Mobile from the available networks and it will connect. But when I go to work, I will lose signal every few block, and need to search for available network again and wait to select t mobile again.
I had try to use the t mobile sim card on my old phone and everything will works fine with no signal lost.
Can anyone please HELP!... I been searching and looking for an answer for more than 2 weeks..but no resolve.....
Thanks
Click to expand...
Click to collapse
This is probably because T-mob covers only particular places the frequencies this phone uses http://theunlockr.com/2013/07/05/htc-one-sprint-specs/ vs t-mob https://t-mobile.jive-mobile.com/#jive-document?content=/api/core/v2/documents/4988
Sent from my HTCONE using Tapatalk
Is there any solution for this problem ?
Is there anything I can do to fix this problem ? (different rom or radio...etc..) Or I have to give up the phone... Cause it is too much headache to "searching for network" all the time and miss all the call with no service on the phone without knowing..
Thanks
lazybozz said:
Is there anything I can do to fix this problem ? (different rom or radio...etc..) Or I have to give up the phone... Cause it is too much headache to "searching for network" all the time and miss all the call with no service on the phone without knowing..
Thanks
Click to expand...
Click to collapse
well, I am not an expert on the tmobiles network, but going by what lazybozz, said, I seem to remember tmobile using different bands than the other carriers, so what you may be experiencing, is the phone being in the vicinity of multiple towers, but not all of them are within the band that the phone supports. So its like the phone doesnt even see those towers. On a side note, this issue caused alot of chaos for those who unlocked iphones about 3 years ago, they could use EDGE on tmobiles network but not 3G, so i assume this is a similar situation. So long story short, yeah you probably cant fix the problem, unless you get a quad band phone. I could be wrong, but it does sound like a logical reason for the issue you are having.
as elvisypi said above, Its the freq that T-mobile operates on in that area. If your getting T-mobile at all in the states then you have already flashed a radio. However flashing any other radio is not going to give you the freq that tmobile uses, Its not a software limitation its a physical hardware limitation.
Thanks for your reply, do you know any app out there that monitor and alarm you when the network or signal is lost ? That works with 4.3 ?That way at least you know the phone is offline ... some of the apps I tried is anything at all ...
Thanks
Have you tried an app like tasker? Its essentially an automation app. It isnt jist for your use. Its for many different functions. Jist look on the app store for tasker. That might help
Sent from my HTC Butterfly s using Tapatalk

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