1. SIM Type: Micro-SIM
   
2. Operating System: Android 5.1 (Lollipop)
   
3. Network technology: 4G LTE
   Note: Limited 4G LTE availability in select markets. 4G speeds delivered by HSPA+ (with enhanced backhaul) and LTE, where applicable. Not available everywhere. Deployment ongoing. Compatible device and data plan required. Learn more at att.com/network.
   
4. Operating Frequencies
   Note: Refer to International Services for equipment, roaming partner, pricing, and available services information.
   
5. Physical Characteristics & Battery
   Note: The battery is not removable.
   
6. Storage: 8 GB Internal memory.
   Note: Up to 32 GB expandable memory with microSDHC card. Memory cards sold separately.