I have a shiny new copper Z3 in my hands and today I cut the T-mobile SIM from my Nexus 5 to be able to put in my Z3, however I am not getting LTE at all on it in places that I know it should. Went to the store and they checked the APN and they see no issue. I've downgraded to .93 be able to root, would flashing that FTF interfere with being able to get LTE?
Fixed my own problem. The issue was that I did not have the SIM inserted when I set up the phone last time, it prompted me for what network I was on and automatically downloaded the settings when I reflashed the FTF file.
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I'm not sure if this is a network issue or a phone issue. I just got a replacement phone from Google. Popped in my sim 2 days ago and it was working fine, OTA 4.4.4 updated the same day. Came to work today and it was working for about an hour, and now it says there is no connection. I go to the "network operators" list and I only see ATT on there, which doesn't work for me since I'm on T-mobile. Other people in my building have T-mobile too and their phones work just fine, so I'm guessing it's not a tower issue.
I've tried restarting the phone as well as taking the sim out and reinserting it. Anything else I can try?
Phone is stock, not rooted, not flashed with a new rom.
Hi,
I hope someone could help me save a useless phone.
I got a Z3 from ebay (it's O2 Germany). As soon as I turned it on it updated to 5.0.2.
Then later I inserted the SIM card (took me some time to get the nano from the carrier).
It's not SIM locked.
The problem is that I can't get a steady signal. AT ALL. It hits a signal for 2 sec, then nothing.
It can recognize my carrier in the split second that it's on, I got the access points and all. I can even search for carriers and get a list of several to choose from.
The same phenomena is apparently happening with the NFC - the software switch turns on then straight off (same radio chip issue?)
I have tried GSM only, WCDMA only, LTE.
Tried changing the bands used using the internal *#*# menus.
Using flashtool I have flashed a stock global rom instead of the german. And local stock.
I have read that some people had this issue after the lollipop update so I rolled back to stock 4.4.4, same issues with cellular and NFC.
I'm really at a lost. I have this fancy brick that I was hoping to give my dad (he needs the screen size, the old fool) and instead I'm wasting valuable time at work trying to fix it...
Anyone?
Thanks,
Juv.
J_McBurst said:
Hi,
I hope someone could help me save a useless phone.
I got a Z3 from ebay (it's O2 Germany). As soon as I turned it on it updated to 5.0.2.
Then later I inserted the SIM card (took me some time to get the nano from the carrier).
It's not SIM locked.
The problem is that I can't get a steady signal. AT ALL. It hits a signal for 2 sec, then nothing.
It can recognize my carrier in the split second that it's on, I got the access points and all. I can even search for carriers and get a list of several to choose from.
The same phenomena is apparently happening with the NFC - the software switch turns on then straight off (same radio chip issue?)
I have tried GSM only, WCDMA only, LTE.
Tried changing the bands used using the internal *#*# menus.
Using flashtool I have flashed a stock global rom instead of the german. And local stock.
I have read that some people had this issue after the lollipop update so I rolled back to stock 4.4.4, same issues with cellular and NFC.
I'm really at a lost. I have this fancy brick that I was hoping to give my dad (he needs the screen size, the old fool) and instead I'm wasting valuable time at work trying to fix it...
Anyone?
Thanks,
Juv.
Click to expand...
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I got the exact same problem, im in Norway and using mye Operator firmware..
I'm having the NFC problem. I have the US T-Mobile version (D6616), and NFC stopped working right after I updated to Lollipop.
Factory reset, and repairing using Sony's PC Companion does not help. On first boot, i'll get a "NFC firmware update failed (-1)".
I just got a very slightly used xperia xz f8331 for a song. Unfortunately it seems the cell radio is not functioning. Even after a software repair via xperia companion.
The phone has been updated to 7.0. It is the networked unlocked uk version but trying to use it on att (previous owner used it on tmobile). Phone is still bootlocked, iemi is clean. Tried changing the apn settings. Took the phone to at&t for a new sim. Still no connection.
Anything im missing or could try. The phone is still under warranty but as I live in the states... dont know how that would work.
Bought a new in box d6603 z3 to replace my dying galaxy s5. Didn't even bother with stock rom, I immediately unlocked the bl, installed twrp and flashed the latest lineage. Once I stuck my SIM in I realized I'm not getting LTE at all, it only gets 2g Edge. The APN settings were fine, so I erased dalvik, system, cache, etc and reinstalled... same thing, no LTE. I fully erased it again and installed resurrection remix, same thing I'm only getting 2g Edge.
Has anyone gone through this? I know the d6603 contains the LTE bands needed for US t-mobile. What on earth is wrong?
Edit: forgot to mention, I also ran down to t-mobile to make sure they didn't need to do something like add the device to my account, they gave me a new SIM card but there was no change. I have a t-mobile personal cellspot plugged into gigabit internet, so I should have full coverage in throughout my home.
I flashed my S7 (930P) to a 930U following these instructions: https://www.youtube.com/watch?v=y0eye-zDOtQ
When I slap my XM sim in my S7, it tells me none detected. The sim is good, I can put it back in the e5 I snagged and it gets coverage immediately. I've tried flashing the modem with the VZW image and am pulling down the 930VC/CCT image now so I can try the Xfinity modem file in case that is the ticket.
If it's not, I'm not sure what my next step is. Any recommendations?
Turns out I'm not thinking straight. Checking the modem file now.
No luck
The device wasn't unlocked and I had the impression the U firmware would release that lock. Not true, still had to get Sprint to unlock.
@eskaryo
I have a sim unlocked Sprint S7 (g930p) on Android 8.0. And when I put in my active xfinity sim almost everything works. Data works, incoming and outgoing calls and texts work. But it won't switch out of roaming and all MMS including group text won't work. So do I just need to flash the firmware you mentioned to get everything working right? And can you flash it on a locked bootloader (which I believe this sprint s7 has)? If so can you confirm the exact firmware I need? Thank you!
I have the same problems with Xfinity service on my s7. This is most likely due to APN settings though I don't know for sure. Sorry I couldn't be more help.