Several users have reported that they are unable to find LTE option on their iPhone 5. LTE often provides noticeably faster Web browsing and downloads. AT&T, Verizon, and Sprint offer LTE access in the US but they’re at very different stages of deployment. Tap Settings > General > Cellular > Enable LTE = ON. You will see LTE options only if your cell carrier supports LTE, otherwise it will say Enable 3G. If your Phone 5 is not getting LTE in your area where LTE available, check with your carrier and have them troubleshoot your connection issues.