I just got this phone the other day and I'm trying to get the best speeds for the best value. I can't do the $30 T-Mobile plan because 100 minutes isn't enough, and Wi-Fi calling I don't lime because the quality is very iffy. I have ordered a simple mobile sim card and I will try them for a month, but I wasn't sure if it's the best value. I have to do their $50 plan because I found out with the $40 one after the first 250 mb you get throttled all the way down to 156kb. That's unacceptable. Since it said the first 250mb were at 4g speed, I thought you'd only get throttled down to 3g after that. But apparently they skip straight past it. $50 gives my 2gb before they throttle to almost nothing. But I heard you get 4gb with solavei, and straight talk is unclear about when they throttle. Decisions. If I could get the first month free with solavei I'd def try them out, but apparently that promotion is over.