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Always-on unlimited internet hotspot for Voltron


Apr 5, 2021
Silicon Valley
Gonna try #vanlife for a sometime when I can leave my business behind. I need reliable internet access for both me and my wife to work and the kid to play. :p I have been playing with a few options for awhile and finally found a sweet solution.

Use cases:
*** Camping, road trip, emergency wifi,...
*** This might be a good solution if you don't want to pay for Tesla's premium connectivity.
*** Use it with a hard wired wifi dashcam. I'm thinking about modding a wyze cam for this.
*** Where you park the car has poor AT&T signal.

My setup:
1. t-mobile franklin T9 Mifi.
- free with t-mobile test drive or new line, $35 on ebay.
- unlocked (works with both t-mobile and verizon SIMs). Free, check google.
- IMEI changed to allow the hotspot to use the regular phone plan (not hotspot plan). Check google, the option is under engineering menu.
- supports up to 15 devices.
The T9 mifi has the option to stay on as long as it's plugged in to a power source and it stays on without any devices connecting to it.
Unlike some other mifis which I've used from t-mobile and verizon, this T9 mifi can run without the battery installed. One less battery to blow up. j/k

2. Service:
- t-mobile free add a line (50 GB before data prioritization)
- verizon tablet sim from my work.
Check Visible Wireless if you need a new SIM, $25 a month with party pay from Visible sub reddit. Need IMEI change for this to work.

3. 10ft / 3.05m 14 AWG Extension Cord Dual Plug Socket with Battery Clamp 12V/ 24V Battery Clip-On and Cigarette Lighter Adapter
--- run it from the battery to the front.

4. USB adapter.


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