4 ms·

Custom SIM card in Tesla Model 3 2024, Tesla Model Y 2025 and Cybertruck

60 points by LorenDB 1y ago

tazjin 1y ago
I flagged this because the site runs some Javascript for me that attempts a redirect to a spam page (which uBlock caught). Looks like there might be some malicious code injected there.
- NewJazz 1y ago
  I can't reproduce that.
  - redundantly 1y ago
    Ditto. Viewed it just fine via Safari on iOS. I'm guessing GP accidentally triggered the form for the comment system.
  - ThePowerOfFuet 1y ago
    Try with a Russian IP.
    - mgiampapa 1y ago
      No thank you, I have all of Russia/China/Belarus's normal IP space blocked at the router in both directions. I don't expect it will protect me from anything, but it's a great way to not accidentally step into bullshit.
- grishka 1y ago
  I can reproduce this. It might be only happening for Russian IPs because it does not happen if I use my VPN. (The author is Ukrainian, so nothing surprises me at this point)
adamnemecek 1y ago
[flagged]
- rogerrogerr 1y ago
  Super easy to imagine, especially as the used prices have dropped lately. Some very good deals out there. (Especially if you live in a place where politically motivated vandals aren’t feeling emboldened).
  - SoftTalker 1y ago
    How are insurance rates, given recent events?
    - rogerrogerr 1y ago
      My policy renewed a couple weeks ago and went down. I’m a 25yo driving a 500hp car and paying $80/mo. No tickets or history. Full coverage with healthy limits. It’s about 30% more than when I had a Leaf, which seems more than fair. I wouldn’t insure me in this car for $80/mo.
      - toomuchtodo 1y ago
        Tesla insurance? Asking because they’re taking a bath on the financials so that would track. Even Tesla's Insurance Arm Is Getting Wrecked Right Now - https://news.ycombinator.com/item?id=43947690 https://news.ycombinator.com/item?id=43947690 - May 2025
        rogerrogerr 1y ago
        State Farm.
        toomuchtodo 1y ago
        Great rate! I’m early 40s paying ~$220/vehicle/month for four Teslas with State Farm in FL.
dawnerd 1y ago
Wonder if this could work with the Calyx sim now that they have BYOD.
- gruez 1y ago
  As per the OP, there's no advantage of doing this if you're in a region that Tesla officially supports, because Tesla already has free connectivity with the free built-in SIM. The only use of this is if you're in a region where Tesla isn't supported, and thus Tesla won't have the necessary roaming agreements for its built-in SIM to work. The Calyx sim only supports US and Puerto Rico, so it's of no use. There's no privacy benefit either, because the phone can still upload your location/telemetry regardless of what SIM you're using.
  - NewJazz 1y ago
    Wouldn't this be relevant for those who want to decouple their car from Tesla tracking? Obviously only a partial solution, but still.
    - gruez 1y ago
      How are you decoupling from Tesla tracking by using your own SIM? The car has a built-in GPS so even if it can't track you by cell tower pings, it can upload your location to Tesla servers all day long.
      - NewJazz 1y ago
        I'm sorry did you miss the part where I said "obviously, only a partial solution"?
        gruez 1y ago
        It's unclear whether Tesla even does any tracking through the cellular connection, when it can get far better accuracy through the GPS receiver and myriad of cameras/sensors in the car itself.
layoric 1y ago
> Waking up the car The native Tesla mobile application wakes the car by sending an SMS to the internal SIM card number. This number is registered in the Tesla database. When using a custom external SIM, you must manually send an SMS (with arbitrary text) to your SIM number. Any SMS will wake up the car, and it will be available via the Tesla mobile app. Don’t forget to unsubscribe your SIM from any newsletters to avoid false wakeups and extra power drain. Wow..
- boredatoms 1y ago
  Does this mean spam sms could be waking up my car even without a sim swap?
  - bobmcnamara 1y ago
    If they did it right, these would be setup with their own range of numbers that can't be routed from anywhere outside of their carrier and servers. Cell companies have a word for a setup like this but it escapes me.
    - 2bluesc 1y ago
      Closed User Group (CUG)?
      - bobmcnamara 1y ago
        That's it!
    - systemswizard 1y ago
      Tesla has a custom APN
      - fresh_geezer 1y ago
        APN does not influence SMS (nor phone number routing) though.
- 1y ago
pinoy420 1y ago
[dead]
0x38B 1y ago
https://archive.is/svEad https://archive.is/svEad
dzhiurgis 1y ago
Why they didn’t use eSIM?

60 points by LorenDB 1y ago

I flagged this because the site runs some Javascript for me that attempts a redirect to a spam page (which uBlock caught). Looks like there might be some malicious code injected there.

NewJazz 1y ago
I can't reproduce that.
- redundantly 1y ago
  Ditto. Viewed it just fine via Safari on iOS. I'm guessing GP accidentally triggered the form for the comment system.
- ThePowerOfFuet 1y ago
  Try with a Russian IP.
  - mgiampapa 1y ago
    No thank you, I have all of Russia/China/Belarus's normal IP space blocked at the router in both directions. I don't expect it will protect me from anything, but it's a great way to not accidentally step into bullshit.
grishka 1y ago
I can reproduce this. It might be only happening for Russian IPs because it does not happen if I use my VPN. (The author is Ukrainian, so nothing surprises me at this point)

adamnemecek 1y ago

[flagged]

rogerrogerr 1y ago
Super easy to imagine, especially as the used prices have dropped lately. Some very good deals out there. (Especially if you live in a place where politically motivated vandals aren’t feeling emboldened).
- SoftTalker 1y ago
  How are insurance rates, given recent events?
  - rogerrogerr 1y ago
    My policy renewed a couple weeks ago and went down. I’m a 25yo driving a 500hp car and paying $80/mo. No tickets or history. Full coverage with healthy limits. It’s about 30% more than when I had a Leaf, which seems more than fair. I wouldn’t insure me in this car for $80/mo.
    - toomuchtodo 1y ago
      Tesla insurance? Asking because they’re taking a bath on the financials so that would track. Even Tesla's Insurance Arm Is Getting Wrecked Right Now - https://news.ycombinator.com/item?id=43947690 https://news.ycombinator.com/item?id=43947690 - May 2025
      - rogerrogerr 1y ago
        State Farm.
        toomuchtodo 1y ago
        Great rate! I’m early 40s paying ~$220/vehicle/month for four Teslas with State Farm in FL.

dawnerd 1y ago

Wonder if this could work with the Calyx sim now that they have BYOD.

gruez 1y ago
As per the OP, there's no advantage of doing this if you're in a region that Tesla officially supports, because Tesla already has free connectivity with the free built-in SIM. The only use of this is if you're in a region where Tesla isn't supported, and thus Tesla won't have the necessary roaming agreements for its built-in SIM to work. The Calyx sim only supports US and Puerto Rico, so it's of no use. There's no privacy benefit either, because the phone can still upload your location/telemetry regardless of what SIM you're using.
- NewJazz 1y ago
  Wouldn't this be relevant for those who want to decouple their car from Tesla tracking? Obviously only a partial solution, but still.
  - gruez 1y ago
    How are you decoupling from Tesla tracking by using your own SIM? The car has a built-in GPS so even if it can't track you by cell tower pings, it can upload your location to Tesla servers all day long.
    - NewJazz 1y ago
      I'm sorry did you miss the part where I said "obviously, only a partial solution"?
      - gruez 1y ago
        It's unclear whether Tesla even does any tracking through the cellular connection, when it can get far better accuracy through the GPS receiver and myriad of cameras/sensors in the car itself.

layoric 1y ago

> Waking up the car The native Tesla mobile application wakes the car by sending an SMS to the internal SIM card number. This number is registered in the Tesla database. When using a custom external SIM, you must manually send an SMS (with arbitrary text) to your SIM number. Any SMS will wake up the car, and it will be available via the Tesla mobile app. Don’t forget to unsubscribe your SIM from any newsletters to avoid false wakeups and extra power drain. Wow..

boredatoms 1y ago
Does this mean spam sms could be waking up my car even without a sim swap?
- bobmcnamara 1y ago
  If they did it right, these would be setup with their own range of numbers that can't be routed from anywhere outside of their carrier and servers. Cell companies have a word for a setup like this but it escapes me.
  - 2bluesc 1y ago
    Closed User Group (CUG)?
    - bobmcnamara 1y ago
      That's it!
  - systemswizard 1y ago
    Tesla has a custom APN
    - fresh_geezer 1y ago
      APN does not influence SMS (nor phone number routing) though.
1y ago

pinoy420 1y ago

[dead]

0x38B 1y ago

https://archive.is/svEad https://archive.is/svEad

dzhiurgis 1y ago

Why they didn’t use eSIM?