l7 Insert sim problem

[kanewilliam]

hi guys i a-m having l7 water damaged but everything is working mic was giving trouble it was working somewhat but only problem is insert sim if i put a particular service providers sim it says insert sim i have changed it with a new prepaid sim that is prepaid sim and if i put the same service providers post paid sim it works what might be the problem and i think its band is 900-1800 kindly help me guys i am using the prepaid card only so i want it to work in it guide me

[boyagot]

Try To Clean The Sim Reader First,

Clean The Connector And Flex For The Keypad

[kanewilliam]

i have cleaned it a many times but no use all the sims are recognised but only this one is not recognising

[Leo140]

i have cleaned it a many times but no use all the sims are recognised but only this one is not recognising

that's sim is dead, throught it away

[kanewilliam]

i have switched to new sim but the same problem only that particular prepaid sim is not recognised the same service providers sim post paid sim is recognised :eek::eek::eek::eek::eek::eek::eek: