T-Mobile reshuffled its plans last year and got rid of our previous pick in this spot, the Base Essentials plan that offered a single line for $45 a month. It replaced that option with an Essentials Savings plan, a "limited time" offer of $50 a month for a single line.It has since been renamed to Essentials Saver, and although the plan is largely the same, there are some notable tweaks.The data remains unlimited, and you now get 50GB of high-speed data, instead of the 20GB that Base Essentials offers. T-Mobile hasn't said how long the Essentials Saver option will hang around, but we break downhow it compares to the carrier's plans here.As before, perks like free Netflix or the bundling of taxes and fees into the sticker price aren't included. You do get unlimited hotspots at "3G speeds" and unlimited talk, text and 2G data in Mexico and Canada.At $50 for a single line, the Essentials Saver plan is now the same price for a single line as AT&T's Value Plus plan, and both could be solid options for those looking for a single line without frills.Although the price of the AT&T and T-Mobile plans are now the same, we give T-Mobile the edge here mainly because it includes hotspot access. Even at "3G speeds," the option could be a useful feature in a pinch.It's also worth mentioning that T-Mobile allows for multiple lines on this plan, with two lines running for $80 a month. (If you need three or more, you may want to look at one of T-Mobile's other plans, which could be cheaper thanks to various promotions the carrier regularly runs.)You may need to click "see more plans" and then "explore Essentials Saver plan" on T-Mobile's site to get this option to appear, although lately, the carrier has been showing it alongside its other offerings.