Xiaomi Cannot Register on O2 in Birmingham
Xiaomi Not Registered on Network on O2 UK? (2026 Fix) If your Xiaomi, Redmi or POCO phone shows "Not Registered on Network" , "Emergency Calls Only", or fails to connect to O2 UK entirely, you're not alone. This issue can affect both physical SIMs and eSIMs, especially on imported or older Xiaomi devices. This guide covers the most common fixes for O2 UK and O2 MVNOs like Giffgaff, Tesco Mobile, Sky Mobile and Lyca Mobile. Works For ✔ Xiaomi 12 / 13 / 14 / 15 series ✔ Redmi Note 12 / 13 / 14 series ✔ POCO F / X series ✔ HyperOS ✔ MIUI 12.5+ ✔ O2 UK ✔ Giffgaff (O2 network) ✔ Tesco Mobile (O2 network) ✔ Sky Mobile (O2 network) ✔ Lyca Mobile (O2 network) Note: MVNOs like Giffgaff, Tesco Mobile, Sky Mobile and Lyca Mobile run on the O2 UK network. The same fixes apply. Menu names may ...