A Sina Weibo user with early access to the HTC One version tailored for China Unicom has pictured the One 802w smartphone. The picture reveals a removable back cover, two SIM slots (WCDMA) and a microSD card slot just under the 4 MP camera lens.
The HTC One will globally be available with either 32 GB or 64 GB of storage built-in but without the expandable option, which has caused quite a lot of controversy.
There's no word if the 802t (China Mobile) and 802d (China Telecom) versions of the HTC One will also come with expandable storage and two SIMs but the 2 at the end of the product number can be indicative of the dual-SIM abilities. The European version's model number is 801n.
removable back cover is for placing SIM cards and Memory cards .....battery is non removable :)
sorry this one http://www.htc.com/in/support/htc-one-dual-sim/ saurabh
hi dude....i think u have not searched on google for user manual..... http://www.htc.com/assets-desktop/images/pdf/htc-one-dual-sim-brochure.pdf enjoy saurabh