Root [MetroPCS/CDMA] need help my 4g not working AFTER get back stock

[yadi21ym]

i get back to stock and now my 4g is not working only 3g any ideas thanks

 

[PONEKOBY]

http://androidforums.com/showthread.php?p=5607851

Unable to toggle 4g on stock and metropolis 4.1.2 touchwiz This may help.

 

[yadi21ym]

I try this but still only geting 3g and gps not eorking