Sony Ericsson E15i White Paper page 6

Data transfer speeds
GSM GPRS
GSM EDGE
UMTS HSPA cat 5 (upload)
UMTS HSPA cat 8 (download)
Talk time (GSM)
Standby time (GSM)
Talk time (UMTS)
Standby time (UMTS)
Music listening time
Video playback time
Battery
* According to GSM Association Battery Life Measurement Technique.
** Battery performance may vary depending on network conditions and configuration, and phone usage.
Up to 85.6 kbps
Up to 236.8 kbps
Up to 2.0 Mbps (uplink, Cat 5)
Up to 7.3 Mbps (downlink, Cat 8)
Up to 4 hours 45 min *
Up to 446 hours *
Up to 5 hours 40 min *
Up to 476 hours *
Up to 23 hours 40 min **
Up to 9 hours 20 min **
1200 mAh
6
White paper | Xperia™ X8
March 2011