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Very urgent, My S4 I9515, phone is not connecting to 4g/3g, only connecting to 2g, Its happened after - 1. change Imei (now not original Imei), because of country code 2. fall down 2 time after one day of fall down, my mobile did not connect to 3g anymore . I checked every thing from setting. What I did 1. reset factory setting. 2. software change 4.2 to 5.1 lolipop 3. change power cable but still no working 4g or 3g, please help me what should I do. technician also don’t know. only say no repairing like this. please tell me solution.
network ic weak, change it
