Help With Antenna Or Motherboard Problem With 3g Reception


Oct 28, 2014
11
0
11
#1
Year and a half ago my wife dropped her Mi 4 (3G) in water. It worked until like two months ago and it stopped charging. In a service they replaced the connector and battery (i had a replacement ready). It works good, BUT, on Macedonian Telekom (Deutsche Telekom owned) 3G network it does not work any good any more (it worked just fine for two years). If I put a VIP SIM card it works good, but my wife's SIM is on Macedonian Telekom network and cannot change it :(

So, I have a theory that either the motherboard is faulty (water, corrosion, time...) OR the repairman that replaced the connector and battery did something to the antenna and it is disconnected or something.

How to check both?

Thanks upfront guys :)

EDIT: IT'S THE SAME WITH THE PHONE CALLS AND INTERNET. Forgot to mention :(
 
Last edited:

dogiex

Finnish language.Translator
Aug 24, 2015
1,108
376
142
#2
Year and a half ago my wife dropped her Mi 4 (3G) in water. It worked until like two months ago and it stopped charging. In a service they replaced the connector and battery (i had a replacement ready). It works good, BUT, on Macedonian Telekom (Deutsche Telekom owned) 3G network it does not work any good any more (it worked just fine for two years). If I put a VIP SIM card it works good, but my wife's SIM is on Macedonian Telekom network and cannot change it :(

So, I have a theory that either the motherboard is faulty (water, corrosion, time...) OR the repairman that replaced the connector and battery did something to the antenna and it is disconnected or something.

How to check both?

Thanks upfront guys :)
Have you checked that the APN settings are 100% correct?