Weird. I got that message the other night when I restarted my AT&T branded S4. I clicked it and it didn't do anything and my phone registered LTE like nothing and has been fine ever since. I didn't think anything of it, though that is the first time I've seen it and I've been on the S4 for a month.
Originally Posted by beastliest
Castrol EDGE 5W-30 is my drug of choice.
Primary: iPhone 6 64GB, Galaxy Note 3, Lumia 635: 5 lines, 3x $5 Android web, 1x $2.99 T-Zones, corp discount + $10/mo loyalty discount = $93/mo tax inclusive
Secondary: iPhone 4S & LG Ultimate 2: TracFone (Verizon)
Mobile Broadband: HP Stream 13 w/ T-Mobile 4G & iPad Mini Retina w/ T-Mobile 4G LTE ($10/mo for 5GB with hotspot)