The BlackBerry Charm (7100 series) is a discontinued smartphone made by BlackBerry Limited, then known as Research In Motion. The Charm was equipped with SureType technology, which used predictive type to allow for normal QWERTY-style typing using only 20 keys.[1][2] It featured a 240x260 pixel display, polyphonic ringtones, quad-band GSM radio, and Bluetooth.[3][4][5] The original 7100t (T-Mobile) was released in 2004,[6] with the 7100r (Rogers), 7100v (Vodafone),[7] 7100g (Cingular / AT&T Wireless),[8] 7100x (O2),[9] and 7100i (NEXTEL / Sprint)[10] being released later.
^Markiewicz, Tom (December 28, 2004). "Blackberry 7100t from T-Mobile". Tom Markiewicz. Archived from the original on September 28, 2022. Retrieved January 20, 2022.