Hello..i bought this phone about years ago.. But last 2 week my phone have battery issue.. Before this i can use the phone for whole days but now it drop quickly.. I dont know what to to.. N big problem appear 3 days ago.. I cannot call or receive any sms or call form anyone.. I think its because sim card but when i use other phone i can easily call.. In the screen line is full bar...

Anyone know how to solve tis problem..

Anyone can help me.. My phone always in mode no service.. Like cannot detect sim card.. Have tried using that sim card on other phone and it work normally..

Have claim warranty for this problem but lesss than one week the problem appear again...