I am receiving continue error of network unavailable please try again.

[Waqas079]

I am receiving continue error on my secreen of network unavailable please try again. And one more error

Server access failure (1-10087) check your network or try again later

Kindly help me regarding this problem. 

I have also problem during calls. Signal issue. 

[Waqas079]

A71 mobile I have

[XeeBaba]

did you root your phone ever. some times while rooting your phone. this problem can occure. if not then update your phone.

[XeeBaba]

if you problem did not solve then factory reset is last option. there should not be hardware problem

[Waqas079]

if I root my phone

[Waqas079]

then all data Will erase?.

[XeeBaba]

no your data will not erase in sd card. but yeah phone data ll gone. prefer u first back up you data nd then root . before rooting charge fully your phone. while rooting you phone should not be shutdown due to lack of charging.

[XeeBaba]

remember after rooting . you cannot comeback on samsung orignal os. never mind you already got non orignal msg . root it bro.

[Waqas079]

ok