Since upgrading to iOS 9.3, a lot of Sprint customers have run into issues staying hooked up to the service's LTE community. In a textual content message to customers these days, MacRumors reports, Sprint stated that it's acutely aware of the problem and is figure on a fix.
Your iPhone could also be having knowledge connection issues with the up to date tool update. We're working temporarily to fix. We ask for forgiveness for the inconvenience.
It's uncertain how temporarily the update could also be driven out, however affected Sprint customers will optimistically have a respite from the LTE connection issues quickly.
This follows the discharge of iOS 9.3.1 in advance lately, which contained a fix for a web link issue that were inflicting apps to crash.