6 March 2013 by Permi Krishna
Unlocked phones typically do not come with a contract. If you buy a locked phone, you might be charged to unlock it and sometimes it could be illegal to unlock them, because your operator may or may not support unlocking. Usually, unlocked GSM phones use 2G network based services, and are very convenient to buy.
The best GSM unlocked phones help you to change your SIM card whenever you feel like switching the operator. If you travel frequently, these phones allow you change your SIM card to afford local plans and save roaming charges. Most of the best GSM phones are featured phones, and some of them are smart phones too. You can buy them either from retail outlets or from the hardware manufacturer authorized stores.