Using the Verizon (Warp) and T-Mobile (Light Speed) Networks on US Mobile
On the Unlimited Premium Plan with Multi-Network Add-On. ($348 all-inclusive for the year 2026)
At SansEnd Home Office - Mobile Performance on iPhone 13 Pro and Apple Watch Ultra 2
On Verizon at SansEnd
- Verizon Phone Calls Always Work (but calls can be Sketchy on the iWatch);
- Verizon Cellular Data is Entirely Unusable Due to Consistently Weak Signal
On T-Mobile at SansEnd
- T-Mobile Phone Calls Always Work (Including on the iWatch);
- T-Mobile Cellular Data is Great Due to Consistently Strong Signal
Settings for Best Performance
iPhone → Settings → Cellular
→ Default Voice Line - Set to Verizon (Warp) for Apple Watch Cellular Plan (While the iWatch Cellular Plan is Only Available on the Warp Network, this is Required for Making and Receiving Phone Calls on the iWatch While Away from the iPhone)
→ Cellular Data - Set to T-Mobile (Light Speed)
TESTED:
Using the EmailMe App on the Apple Watch – Record and Send Audio Notes (Each Recording is the Same Length, i.e. 30 Seconds)
Result:
– When Cellular Data is set to Verizon on the iPhone, Sending Lasts approx. 60 Seconds, and Sometimes Failing to Send at All
– When Cellular Data is set to T-Mobile on the iPhone, Sending Lasts approx. 5-10 Seconds and Never Fails