Ok so been seeing too many people asking the same damn question about how do we know if we are on old grandfathered in $50 plan and what happens when we reach limit. First of all theres no grandfathered in $50 plan all u get is 1gb and thats it so just upgrade to new $50 plan and get yourself 2.5gb . now with that being said the first thing that happens when you reach 90% is you get a txt message from metro saying you have 10% left of your bandwidth. then once u used it all up you get another txt saying you have used up all your monthly 4g data. The results might suprise alot of you guys but u dont lose your 4g it just gets really slow around 100-200 kbps down and up around 200-250kbps typical metro 3g speeds.