Not reliable. I switched over from Verizon since their prices are now insane. The first 2 months on us mobile went perfectly - well almost. However, starting the 3rd month I began having connectivity issues with my hotspot. Yes, I had data, and no there is nothing wrong with my laptop. I called us mobile support and they acknowledged they were having some issue. He then wanted me (and yes their tech support is always someone with a hard to understand accent) to add some APN's to my phone. Yes, well, I can't. No my phone isn't locked. However the APN settings are all greyed out. Turns out that (some) phones sold by verizon have this feature locked EVEN once the phone itself is unlocked. I tried to follow a workaround mentioned online to remove and reinsert the sim card and then go immediately to add API - you only have about 5 seconds to do this. Well this too is impossible since on my j3 eclipse the sim card cannot be accessed without removing the battery - and this one wont work with the battery removed even if you have it plugged in. Therefore, that was impossible. I tried multiple apps from the galaxy store and the play store claiming to let you force API's. Guess what - even they can't override my locked settings. The long and the short of it is that verizon, at least in some cases, makes it (obviously intentionally) impossible to use your verizon phone with another carrier - at least in a way that is consistently hassle free. It is suggested that NOT USING warp (which uses the verizon network) may get you around this. I don't know as I threw away the other sims us mobile includes. Does my service with us mobile work the majority of the time? Yes. Does it work all the time? No. Does that frustrate you when you sit down to go online? You betcha. This should not come as a surprise to me or anyone else. Does us mobile seem too good to be true? Ofcourse; and that's because it is. In other words IF you are using a phone that has not had certain settings made unmodifiable by the original carrier even after unlocking the phone, and IF everything else goes well, THEN you'll be one of the lucky for which us mobile is just as good - and waaaaay cheaper. But, if you're like my case, you'll have to endure less than consistent reliability. Of course at $23 vs $130 a month, I'll definitely live with it. (Keep in mind that us mobile has nothing to do with the mobile networks it leases from - so when one of them is having issues, say verizon and you're using warp, then you're going to have issues).