Missing HSPA/LTE bands on 5803? - Xperia Z3 Compact Q&A, Help & Troubleshooting

With the recent official Lineage build for Z3C, I imported a cheap 5803 from Hong Kong to play around with. Installed Lineage, and noticed I was only getting an Edge connection on T-Mobile. Re-installed a "stock" ROM via Flashtool/Xperifirm, and the problem persisted. I've had two 5803's in the past, with the same carrier, and had no problems with the data connection. Going into the "Configuration" service menu, I looked at the available bands, and it seems like lots are missing (basing my expectations on FrequencyCheck). Am I confused, or is there something wrong/different with this phone?
Screenshot of config at imgur.com/a/5W42uot
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Service Info > Model Info shows D5803?

That's the confusing thing, the settings do show model D5803. After searching the forums more, I found another thread from a user that has a similar problem: https://forum.xda-developers.com/z3/help/d6603-brand-device-basebands-missing-t3316118 -- phone flashed with a different model firmware. I guess the person I bought from was dodgy.

The only thing I can think of is:
in the compartment where the SIM card is, there is a white plastic slip that you can pull out. It will have the model number on it. Mine specifically says "Model: D5803". You have to pull the strip almost all the way out to read it.
I recommend using a pin to pull it out. There's a little hole/slit that you can poke the pin through. Do it slowly and avoid pulling the slip all the way out, as I suspect it would be difficult to slide back in if you pull it out too far.

Related

Small cosmetic issue - Sprint Diamond

I've had my Diamond for about a week or so now and after a few days I noticed a relatively minor cosmetic issue. As seen in the pics below, the button pad on the bottom is slightly raised on the right side. The buttons still function as normal. It's not really noticeable when you're holding the device during normal usage, but pretty visible when looking at it from certain angles. Are there any decent disassembly instructions/walkthroughs for the Sprint Diamond floating around? I found the service manual for the euro diamond, but not the CDMA Sprint version. I can probably do it myself, but it always helps to have a backup in case I forget how to re-assemble certain parts. I'm not sure it's something I really want to bother sending the phone back for or anything. I can live with it if I can't fix it myself.
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Diamond service manual
Hi if you PM me your email adress I will email you the service manual.
Ken
I've got the normal Diamond (squared version) and it also has the this problem since the very first day, but on the left side of the panel (the home button). I checked a friend's diamond and it had exactly the same thing on the same place.
Anybody else?
I somewhat fixed it by just fabricating a small washer (out of a twist tie) that goes under the screw on that side, so when you tighten the screw down it pulls the button pad inward a little. It's not perfect, but much better.

keydoard replasing?

Hi,
my keyboard, some of the keys are not good... I have to push realy realy hard and 4-5 times if I want to succeed with the letter. and sometimes the same letters are a bit more ok but still hard-pushing.
Do you know if it is a dist problem so to give it for cleaning of to buy a replacement for example this from ebay (komes with also top pad)
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I'm also facing the same problem. I've heard that the keyboard can be cleaned to rectify this. Any suggestions how to do it or where to look?
I think if it is the case for the tilt ( see the second image of the link) it will be quite hard to clean it (it looks encapsulated)
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=260456182960&ssPageName=STRK:MEWAX:IT
probably I will try to order one for my Tilt?
Thanks - I heard it can be cleaned and then keyboard works like new
But I could not find on the internet ..
i think you'd either have to use compressed air or disassemble it using the guide and clean it up.
http://forum.xda-developers.com/showpost.php?p=2719032&postcount=1
I have 2 keyboards on the way to replace on 2 of our tilts, plus the tool kit. I have downloaded the manual too.
can comebody tell me if this is Tilt At&T compartable kaypad , so to buy it?
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=260456182960
No clue how to put that in. I ordered 2 with the sliders, BUT they both came in today and are both junk. The space key is falling out of one, and the other, the menu key is faling out.
These are the ones i ordered, http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220425633486&ssPageName=STRK:MEWNX:IT

Nexus 6 after installing new digitizer

I have recently installed a new lcd screen and digitizer on my N6.
Yes. the phone operated just fine for about 2 years before I needed to do the maintenance...
It reboots and operates just fine on WIFI.
When I reboot with a valid SIM, I instantly get connected and registered on the network, and it functions correctly for about 30 seconds.. then drops out/off the network.
When I am rather near a tower it functions correctly too.
So, I am wondering if I somehow bent, or am causing the antennas to not reconnect to the main board fully... I have been looking around for where the GSM antenna(s) are. Google searches and forum searches simply reveal the NFC and quick charging loop under the cover.
Does anyone have an image of the mainboard and it's connectors to the antennas? I have found images of the main components on the board, but none of the GSM part.
Any help in locating/trouble shooting this one would be greatly appreciated.
TIA
http://www.droidforums.net/threads/nexus-6-first-full-day.279389/#post-2595612
Also:
https://www.ifixit.com/Teardown/Nexus+6+Teardown/32877
Thank you for replying....
Oh, btw mine is the XT1103 model.
I followed both of those links prior to posting this.
Yes, the teardown at ifixit was the one I followed. It had a mere mention of the antenna.
The antenna reference diagram doesn't seem to match. I guess it might when the item is inverted.
Here is what I am seeing. Could the wwan antenna actually be the one on the top?
(looking from front)(top is to the left to save space)
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(looking from rear)

Locked phone into "Flashed with unauthorized software" state, IMEI at 0

To make a long story short, a relative bought a phone off ebay that was in Retail/Demo mode and I was tasked with trying to get it out of that state by flashing a different stock ROM onto it. I used to have absolutely no issue before with older phones, but, after a few softboots with no success, I've eventually ended up reaching this far in nuking the phone, and even the IMEI in download mode is showing a 0 (though I'm not sure if that wasn't always like that).
From what I've seen the phone is certainly the Snapdragon variant, and yet there was no way to activate OEM unlocking within the phone. I know this situation is rather insane and I could be SOL but here's to hoping someone could point me in a direction to help fix this thing. I haven't tried flashing the unofficial TWRP in fear that it's going to screw over my recovery (in which I forgot to mention it works perfectly fine at the moment). Alongside with the security error, I have the secure check fail with modem displaying as well. Is there a certain ROM version that might help? I've attached a screenshot that I took right before I fell into the abyss, so hopefully that'll help (unless you can't see it out of me being new). Thanks for any replies in advance.
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It's a brick without an imei number
Sent from my SM-N960F using Tapatalk
Contact seller, we don't discussion this here
Thread closed!

Problem with service provider software version (wrong country) on a Galaxy S20 FE

I purchased a Samsung Galaxy FE unlocked, in Mexico, from a legitimate seller (Amazon). Of course, I was aware of the 4G only and Exynos processor situation, but still, it was fine for my regular needs.
The S20 FE was wrapped in the original sealed packing, so it looked well. However, when I opened it, the charger was not American type but European. That was weird... I initialized the phone and was fine. I started to install all my stuff, but when I tried to configure Samsung Pay, it said that the service was not supported on my phone (see picture 1).
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It was wrong because, in Mexico, we have Samsung Pay. So I did some research, and I found that my phone was from Chile looking at the service provider software version (see picture 2).
The CHO code is for Chile.
Since asking for a phone change will take a long and, besides that, the phone works fine, I prefer to change the service provider software version to a Mexican one. Is it possible to do that? If so, does it make my phone "Mexican", so I can use SamsungPay? Please let me know.
¡¡Gracias!!
did you find any solutions?
It is totally possible to just download the correct firmware and flashing it with Odin, should hopefully fix problems like this. The OP was right, the phone was grabbing Chilean CSC and applying its regional configurations.
@abaceromx21 boot into download mode and take a look at the Knox counter.

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