How to use polaroid 4A cellphone

SOURCE: INSERT SIM

It might be that there is some corrosion on the leads that connect to the SIM card. You can try using a soft pencil eraser on the leads to see if you can clean them up, being careful not to get any debris from it in the phone to avoid any future strange complications.

SOURCE: Insert SIM Card message in nokia 6080 though SIM is inserted

May be its detecting your sim card properly. Check your sim card in another handset. Verify if its the propbelm with sim card not your handset.

SOURCE: Unable to transfer contacts from phone to sim card

On contact , Menu , Copy contact , To SIM .

I don't think it's difficult for you .
THank ,

SOURCE: my lg vu does not recognize the sim card.

When a SIM works in other phones and no other SIMs work in the particular phone, there is a phone issue. Somehow it has become corrupted and it will need replaced promptly. If purchased new from AT&T less than one day ago, it is under warranty as long as there is not liquid or physical damage. If purchased refurbished from AT&T less than 90 days ago, it is under warranty as long as there is not liquid or physical damage. If neither of these apply and you have insurance, use it and there will be a $50 deductible applied to your next bill. If not purchased from AT&T, seek replacement from ebay, craigslist, or a gophone (put your sim in the phone... it will have your phone number, contacts, and information and you won't have prepaid service).

SOURCE: How to remove battery on Razr2 V9?

I had a heckuva time getting the battery cover off my Motorola V9. Essentially both of these work because the phone, our hands and our fingers are a bit oily. Get two piece of non-skid rubber stuff like the things you use to open stuck jar lids. If you have none, jump to Solution B.

Solution A:
1) Lay the phone face down on one piece of the non-skid surface with the Moto logo on the rear facing you and the hinge away from you.
2) Take the other piece of non-skid, place it on the back and with one thumb on either side of the Moto logo press down and away from you. The cover should pop off!
Solution B:
1) Wash your hands thoroughly with hot water and soap, then dry well to removed excess skin oil.
2) With an alcohol prep or a tissue dampened with rubbing alcohol, wipe the OUTER surfaces of the phone down to removed excess skin oil. DON'T SOAK THE PHONE! Wipe your fingers and thumbs down with the alcohol, let dry, and try again: just hold the phone face down in your two hands, HINGE AWAY, press down and away with your 2 thumbs on either side of the logo and ...ta da!