LG Optimus F3 (T-Mobile) 4.0-inch vivid IPS touchscreen 5 megapixel rear-facing camera with LED flash 1.2-GHz dual-core processor Android 4.2 (Jelly Bean) Band/frequency: UMTS Band I (2100); UMTS: Band II (1900); UMTS: Band IV; UMTS: Band V (850); Quad Band GSM; LTE