[Bossman]

Actually, UM+ has been having some problems lately. There are a number of posts here regarding that. Besides, I made a few test calls from here last week about 10 in total, in preparation for an upcoming trip that will take me through Europe and Nigeria. Almost all the incoming calls did not ring to the phone. Even though the caller hears a ringing tone. I tried a couple of outgoing, and I did get the callback (did not answer it though). Of course, that does not mean it will work when I try to use it in another country.

It seems like it's not as reliable as the UM +423 number which works flawlessly. Unfortunately, it's very expensive to reach it.