Roaming on Nexus 5 in UK @WindMobile finally resolved by @WINDCares over Twitter: With SIM Toolkit enable Roaming Setting .. Reselect Visited Network, then Settings … Mobile Network … manual setting for carrier works. Eight days with no roaming, multiple calls to Wind 1-877 and L3 support callback, and even Google Nexus support. SIM Toolkit wasn’t visible on first calls, may have been installed during wifi session. Phone service will be active for 24 hours before getting on a plane home to Toronto.