I got a nokia 225 dual sim, it just suddenly stop to read sim card.
Any ideas will be highly appreciated.
try
* Restart your phone.
* Try the sim on a different phone to ensure it isnt a faulty sim issue or try other sim cards
* Remove and clean the sim and the sim slot pins then re-insert the SIM card.
* if all else fails, then its likely the from the sim card IC or capacitors (have a mobile phone hardware technician check it out for you)