S4 mini looses signal

[TheOneWhoSpeaks]

I keep loosing signal with any sim cards i use. Any fix?

 

[IronRoo]

I keep loosing signal with any sim cards i use. Any fix?

not a common problem, though someone did mention something about problem on 2G or cdma on LOS14 recently, maybe try update modem or flash a different one.

(if you have I9195 here are modems that already been extracted from stock roms https://forum.xda-developers.com/ga...dem-samsung-galaxy-s4-mini-gt-i9195-t3390780)

If still weak signal then it could be poor grounding of pcb or antenna connection, remove battery, remove internal cover, check connections/reseat leads also tighten screws of motherboard/remove check for tarnished/corroded contacts. (if you put a small piece of wire on the test point (micro rf connector) with battery in you might suddenly see signal strength spike meaning it's your antenna/connection is the problem)

 

[TheOneWhoSpeaks]

not a common problem, though someone did mention something about problem on 2G or cdma on LOS14 recently, maybe try update modem or flash a different one.

(if you have I9195 here are modems that already been extracted from stock roms https://forum.xda-developers.com/ga...dem-samsung-galaxy-s4-mini-gt-i9195-t3390780)

If still weak signal then it could be poor grounding of pcb or antenna connection, remove battery, remove internal cover, check connections/reseat leads also tighten screws of motherboard/remove check for tarnished/corroded contacts. (if you put a small piece of wire on the test point (micro rf connector) with battery in you might suddenly see signal strength spike meaning it's your antenna/connection is the problem)

I will send it to the service and replace the antenna.

 

[IronRoo]

I will send it to the service and replace the antenna.

it might not be that, did you test antenna with little cable on test point (just take battery cover off). I was just giving an idea of possible problem. Some people have found just tightening the screws that hold the motherboard fixes it. It could be something else entirely like eg software, is it the same on all modem/baseband & other rom?

 

[TheOneWhoSpeaks]

it might not be that, did you test antenna with little cable on test point (just take battery cover off). I was just giving an idea of possible problem. Some people have found just tightening the screws that hold the motherboard fixes it. It could be something else entirely like eg software, is it the same on all modem/baseband & other rom?

yes
i tried with all the roms, same results