Spent a week or so in Managua, Nicaragua and my phone roamed onto Movistar (displayed MOVISTARNI) in HSPA+ automatically after I took it out of airplane mode. I got the usual welcome texts about roaming coverage, high speed data options, and calling rates.

Seemed to work well, but the data was slow. Speedtests averaged 0.12 Mbps down, 0.20 Mbps up, and 500 ping. I used WiFi at my hotel a lot, but used celldata when it was out, or I was away.

I got two incoming calls, I let 1 go to voicemail. The TMO visual voicemail app worked just fine later to listen to the message. SMS messages were delivered and sent without delay. My phone is a Nexus 5 running Lollipop.

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