Sim Gsm
Old ATT GSM SIM card versus New Cingular SIM error message?
Just bought a new unlocked Sony 600i. When I inserted my ATT GSM SIM card I got the following message: Insert correct Smart Chip. When I insert my wifes Cingular SIM the phone works correctly. Will the phone not function properly on my old SIM card? I recently (1 year ago) purchased a Nokia 5300 that was unlocked and it worked great. Thanks
At&t deactivates simcards if they are not used for 3-months and i think this is what has happened to you. Contact At&t if this is not the case and they will trouble shoot the problem for you!
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Dual Sim Mobile Phones
In the Indian phone market the CDMA (Code Division Multiple Access) technology has a fair reach but the GSM (Global System for Mobile communications) or better known as the sim card technology has a preferred appeal. The CDMA service providers have reduced call rates for their consumers but have an inferior network reach over the GSM technology. Hence dual sim card phones are also designed to support one CDMA network and the other, a GSM network. The dual sim phones in India were first launched by Spice mobile phones. They pioneered in providing a reasonably good handset which used the dual sim technology. They garnered immense popularity for their dual sim phone launch and have been synonymous with this phone technology. The common drawback of these dual sim phones is the battery life. The switching of the networks reduces the battery life and it is inconvenient for the user to charge the phone every few hours, if you use it extensively. These dual sim mobiles try to pack in the multimedia features but they are not up to the mark. Hence a dual sim phone serves only the purpose of a plain phone supporting 2 networks and the other features are not attractive. Samsung Mobile also launched a couple of dual sim card phones. They have received appreciation for the ease of operations and the smooth navigation between the networks. The dual sim card mobile phones are very promising and they have a huge potential market. The dual sim card provides for the comfort of using two numbers at the same time. It gives you the ease of switching between networks at your convenience. It also provides with the comfort of attaining calls and messages from both networks simultaneously. These dual sim mobile phones are pricey and are usually above the entry level mark. They have now started sporting different forms such as clamshell and slider designs. They are more popular in the Asian markets and are gaining relevance in the European markets. There are varieties of dual sim mobiles such as twin CDMA supporting phones, CDMA and GSM networks support phones or twin GSM network phones. You can choose the one that best suits your needs and fits your budget. For more information visit: http://www.naaptol.com
About the Author
Pooja Lapasia is a reputed author and has written her views on many mobile phones and suggest to visit: http://www.naaptol.com/buy-online/WO-best-deals-shopping-W10472O/mobile_phones/cdma_handsets/spice_d88.html to buy dual sim mobile phones
Sim Gsm
