Most time it say insert sim

There may be various reasons for it.
1) Your SIM card might be damaged. Check inserting the SIM card in any other active unlocked phone.
2) The SIM port on the cell phone might be damaged. Check inserting any other active SIM card to your phone.
3) The cell phone might be network restricted. Try inserting any other network's active SIM card to it. If the device reject that too, then you need to unlock the phone. You can unlock a Nokia C1-01 safer and easier using unlock code. You can get the accurate unlock code for a Nokia C1-01 from TheUnlockArena.com at affordable cost. Good luck.

-(<>)--<()>--(<>)--<()>--(<>)--<()>--(<>)-
..............UNLOCKING INSTRUCTIONS..............
-(<>)--<()>--(<>)--<()>--(<>)--<()>--(<>)-

1 - Switch on your Nokia C1-01 without any sim card.
2 - Don't bother as to what is displayed on your Nokia C1-01.
3 - Compose #pw+CODE+1#.
4 - The Nokia C1-01 would then display the message "SIM Restriction Off" and will be unlocked!

Note :For Nokia C1-01 mobile phones locked to the network Fido or Rogers in Canada follow these instructions :
1 - Switch on your Nokia C1-01 without any sim card.
2 - Don't bother as to what is displayed on your Nokia C1-01.
3 - Compose #pw+CODE+7#.
4 - The Nokia C1-01 would then display the message "SIM Restriction Off" and will be unlocked!

The letter p appears if you press the button star(*) three times quickly
The letter w appears if you press the button star(*) four times quickly
The symbol + appears if you press the button star(*) two times quickly
The CODE you need to enter is the unique unlock code for your Nokia C1-01

If your Nokia C7 phone displays an error message saying "Insert Sim (or) Sim card not valid" then your phone is probably network locked.
To unlock it,visit the site OnlineGSMunlock.com here they are providing the unlock code at reasonable cost with easy step by step unlocking instructions and unlock it.Then you can use freely any GSM network Sim card.

Do you want to insert other network sim or if your Blackberry Curve 8350I displaying insert sim card,if already sim card inserted.Don't worry i will help you.You can insert other network sim card in the phone by unlocking the phone from current network lock.To unlock Blackberry Curve 8350I use unlock code.Visit the site Wickedunlock.com get unlock code and unlock it easily.Then insert any GSM network sim card.If the phone displays insert sim card even though sim card is already in the phone.Please remove the sim card and replace it correctly.It is because the phone didn't detect the sim correctly.After inserting if it is display invalid sim or sim not valid message on the screen.It is locked to some network,you need to unlock it.To unlock use unlock code.Get code from online site and unlock it.

get some unlock codes online.

• Clean the sim card and the sim jack and insert the sim again
• If the phone turns off again and again, it might be a software problem

Hi, when a phone says insert Sim,is either the Sim card or the Sim seater that allows the Sim to work is bad.

First try the Sim card on another phone and see if it will display insert Sim again.If it display that means the Sim card is damaged. But if no display,that means the Sim tray of your phone is damaged and will need to be replaced.

Contact a skill prsonnel.
Take care.

Hi,when a phone displays insert Sim, it means that the phone's Sim tray where Sim card are inserted in bad and can't make the Sim card display again .You'll need to replace Sim tray.

Take care.

check ur direction.it means in which direction u r inserting a sim.may be u r inserting a sim in worng way.

If the display says "Insert SIM," it means that the phone has no contact with your subscription card (SIM card) that is inserted in the phone. We recommend that you remove the battery and the SIM card, and clean the connectors on the SIM card and the phone with a soft brush, cloth or Q-tip moistened with any type of unflavored colorless alcohol.
At the same time, check that the card is not damaged or worn in any way, in that case, the connector may not align with the connector in the phone. Please contact your operator / carrier for a new SIM card.

i got a sony ericson k550i the display reads insert sim or view demo but simcard is in the phone. Why did this happen