Single Tower eHRPD failure

[LoneSnark]

I'm vacationing in the mountains and the Sprint tower servicing my area seems to be miss-configured. My phone loves to drop from LTE, presumably due to poor signal, although the LTE seems perfectly functional when it is in use. However, it drops to eHRPD, which gives the permanent error "Unable to establish a wireless data connection LTE: EMM-65535" until it reconnects to LTE.

 

However, a workaround is to lock the phone into CDMA only mode, which switches from eHRPD to regular EVDO, the error goes away, and the data connection functions as it should (slower than LTE, but the phone won't stay on LTE anyway, gosh darn it). 

 

Soooo, should I notify Sprint? Could it just be my phone (HTC One Max)? eHRPD functions just fine everywhere else I've gone for the past year or so. Maybe they are in the process of upgrading this particular tower? 

Edited July 16, 2015 by LoneSnark

[lilotimz]

I'm vacationing in the mountains and the Sprint tower servicing my area seems to be miss-configured. My phone loves to drop from LTE, presumably due to poor signal, although the LTE seems perfectly functional when it is in use. However, it drops to eHRPD, which gives the permanent error "Unable to establish a wireless data connection LTE: EMM-65535" until it reconnects to LTE.

 

A quick search shows it to be a common issue with the HTC One series when they lose connection to the network. I would definitely report it to Sprint. 

[LoneSnark]

Which leaves the question of how...I'm an MVNO customer, not a Sprint customer. Am I even allowed to call their customer support number? 

[Jeff68005]

MVNO. Customers are unlikely to get help from Sprint. You are expected to use whatever the MVNO company calls Customer Service or tech support.

I have had mixed results from the Freedom Pop version of MNOV.

[LoneSnark]

My problem eventually followed me home and everywhere else, causing my data connection to cease functioning whenever my handset dropped from LTE to the eHRPD protocol. Well, it was like that for a week or so, but now has been fixed in a curious way. My phone now no longer even attempts to connect over the eHRPD protocol, using the EV-DO protocol instead whenever on 3G bands. I don't know if this fix came via a PRL or profile update, or if it is a change at the cell site. I'm now wondering if this is going to be a permanent change for all HTC One Max handsets, just me, or merely temporary while problems with eHRPD get worked out.