Coverage problem - Galaxy S 4 Mini Q&A, Help & Troubleshooting

I updated to stock 4.4.2 on gt-i9195 and now when I connect to 3g and LTE networks, the signal is unstable (without moving the phone, it changes inmediately to 2g networks)
Should I change the modem?

Related

[Q] Paranoid JB 4.1 3G/4G not connecting

I flashed this ROM and now I can't connect to 3G or 4G. When I have the WiFi on it says 3G Claro but if I tturn off WiFi or go without wifi signal I can't connect to 3G/4G or normal internet connection.
What should I to?
Thanks
Anyone have any idea? Maybe a radio download?
Issue solved, just had to set APN from Claro PR for internet connection.

[Q] HSPA -> LTE switching time

Hey all - working with a Telus i747m running CM10.
I've noticed that when the phone detects an LTE signal, there's a noticeable period of no signal between dropping the HSPA signal and starting to use the LTE signal. Is this normal behaviour with your network? (It makes sense to me - the phone would need to switch radios, after all.)
Thanks in advance for your feedback.

Help network fail

I install 4.4.2 after I left to catch network in some places and have 3g internet. I wonder what can be ??
What??
Do you have a weak internet connection, only 3g?? I dont understand your post.
I updated from 4.4.2 to let the signal get 3g and having the carrier network

[Q] 3g and 4g problems

since i unlocked the phone i am having problems with my phone
It refuses to stay connected to 3g networks . it connects but after a while it disconnects and doesn't connect again only( if i reboot the phone it does but drops again)
Forcing WCDMA only doesnt fix it , if i choose GSM/ WCDMA it reconnects to gsm
If i pick LTE signal i can do everything but receiving calls it says its turned off
I tried:
Installing stock firmware ( currently 4.4.2 DTM unbranded) and other custom firmware
Getting new sim card and changing carrier ( its not a carrier issue)
All Apn settings are fine
please advise
ok 4g according to info i saw i cant receive calls , however i want it to stick with 3g witch due to my problem has been impossible
signal bar drops after being full and ban no signal
Anyone?
Signal Drops == not fully compatible modem
Installed cyanogemmod and the issue is gonne used all day no issues

LTE connectivity issues, "3107" 3G network

Hi everyone,
My M9 has been having consistent issues with LTE connectivity. I'm rooted, s-off. The issue I'm having is that I regularly only connect to the 3G network, and my phone labels it simply as "3107". In the network list, I'm often connected to the Verizon Tracfone network, not the full vzwinternet network. If I manually switch these, it only lasts a short amount of time and LTE connectivity is weak. I've re-flashed a stock rom, same issue. New sim card even, same issue.
Any suggestions on how I can see exactly what bands are on/off and if my baseband firmware is out of date and/or broken - and if so - where I can get the latest version to try and fix it?
Thanks

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