The HTC Desire A8182 Unlocked Cell Phone in Black lets you choose your carrier and phone independently, as long as those carriers work on a GSM network. Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile and are also compatible with GSM SIM cards like H20 and select prepaid carriers. The HTC Desire offers all the Smartphone functionality you want. It has Call Waiting and Phonebook features, Caller ID, Speakerphone and Voicemail so you can stay in touch. Comes with its own battery charger and data cable. Unlocked GSM phones contain a SIM card that"s programmed with your subscription information. Insert SIM card into another unlocked phone without losing contacts or carrier data. The HTC cell phone will not work with Sprint, Verizon, Boost Mobile, Virgin Wireless or other CDMA carriers. Please contact your carrier to confirm support of voice and data on this unlocked GSM device. 1 lithium ion battery required; sold separately.