Question Finding a prepaid SIM/carrier that will will with my Joying

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j-5

Senior Member
Jun 5, 2013
99
17
I think I read something about that before. Also maybe with a Verizon card? I'm not sure if it's possible to lock a SIM for specific APN settings. I'd suggest trying a different carrier/card. I got a couple of free SIMs from US Mobile that did show up a network, but I haven't activated service on them yet, because I got the T-Mobile Straight Talk card to work in both my units, so I'm not sure how that will work.
how did you fix the new unit?
 

tRidiot

Member
Feb 10, 2015
42
4
I just put it in. I don't know why the old card I had wouldn't show up, but the new one, since it was working my old old unit, I just swapped it over, rebooted and it worked. Didn't have to change APN settings in the new unit, either. Go figure.
 
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webboy10169

New member
Mar 11, 2008
4
0
Ive been trying to do the same thing with my iDoing head unit. t-mobile sim card works fine but t-mobile wont turn on the card. un supported IMEI. t-mobile told me to unlock the unit but I don't see a way to do that....
 

stealthee

Senior Member
Dec 15, 2007
319
81
How did you get to the APN settings? I have been having problems finding this.

Edit: Figured it out. it was under wifi more at the bottom then advanced at the bottom.. then at the bottom of advanced.
 
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dishe2

Senior Member
Dec 2, 2020
76
10
I had a similar experience with my Atoto S8 Ultra trying to use a spare Verizon line. It showed bars, told me the network name, even got a 4G icon, but no data. APN settings were blank (was a real pita to find them) and it would not let me add a new apn.

Meanwhile a TMobile sim card (mint) worked fine and populated its own apn settings. I'd think the unit just isn't compatible with Verizon but then why did I get bars and an apparent lte connection? It feels like if I could set the apn I'd be in, but it sounds like someone here had that and it still didn't work. 🤷‍♂️
 

Palumbum

Member
Jun 28, 2021
23
2
I just put it in. I don't know why the old card I had wouldn't show up, but the new one, since it was working my old old unit, I just swapped it over, rebooted and it worked. Didn't have to change APN settings in the new unit, either. Go figure.
what did you change the APN settings to? How’d you figure out what works/doesn’t?
 

dishe2

Senior Member
Dec 2, 2020
76
10
This really stinks because I have a spare Visible (verizon) line that I'm holding while a kid goes off to camp. Literally doing nothing. I'd LOVE to get it working on my head unit for data independent of my phone's hotspot (useful when other family members drive the car and don't understand why some features suddenly don't work).

It gives me bars, it tells me I have an LTE connection, but the APN is empty and won't give me any data. The Mint sim worked but I'm not paying for service when I already have this one I paid for.
 

j-5

Senior Member
Jun 5, 2013
99
17
This really stinks because I have a spare Visible (verizon) line that I'm holding while a kid goes off to camp. Literally doing nothing. I'd LOVE to get it working on my head unit for data independent of my phone's hotspot (useful when other family members drive the car and don't understand why some features suddenly don't work).

It gives me bars, it tells me I have an LTE connection, but the APN is empty and won't give me any data. The Mint sim worked but I'm not paying for service when I already have this one I paid for.
Copy the APN from your phone and try that. Somewhere on here is how to do that.
Also change your IMEI to a supported device IMEI, but we can't talk about that here.
 

j-5

Senior Member
Jun 5, 2013
99
17
Really? Didn’t know that..
but report back if you try this if it works or not
Changing the IMEI is nebulously illegal (people do it to get around IMEI network bans on stolen devices), so not allowed to talk about here.
IMEI change got mine on the network, but mine doesn't support Verizon, so T-mobile it was (through USCellular)
 

dishe2

Senior Member
Dec 2, 2020
76
10
I got Verizon working using a manual APN entry app!
On my Atoto S8, not Joying, but similar experience to others in this thread, I couldn't manually enter an APN. I had to find an app that let me do it and copied what my phone had.
 

dishe2

Senior Member
Dec 2, 2020
76
10
Does it have to be prepaid? What if I have an unlimited Verizon sim?
I don't think prepaid or post paid has anything to do with how it works. If the unit had the correct bands for lte and shows bars of service but no data is flowing, chances are it just needs the APN to be populated. There are different ways a service provider can provision those settings, and some of those methods apparently don't work on the Atoto, in which case you have to do it the old fashioned way (as mentioned above). This shouldn't matter if the service or post / pre / free / whatever, it's just how each sends provisioning details.

I can only share my own experience with Visible wireless and Mint, those are the only ones I've tried so far. Others have mentioned At&t works as well. I'd imagine most carriers will if the bands are supported by your unit that your carrier uses, and you have the ability to add your APN manually.

EDIT: if you don't get bars, likely that your unit doesn't support whatever LTE bands Verizon uses in your area. Then it won't work no matter what. I'm talking about when it sees towers but doesn't have data, which is what happened to me and at least one or two others in this thread.
 

rnaka530

Member
Nov 13, 2013
14
2
San Diego
www.rennakanote.com
There could be other reasons why you're not getting data. Here are some that I can recall reading threads about:

- wrong APN
- IMEI not useable on the carrier
- some carriers block sharing networks

The last one may not apply to your case. I believe if you have the SIM on your head unit and want to create a hotspot, some carriers may block the hotspot. Some info here: https://www.quora.com/How-can-a-mobile-network-stop-you-from-making-a-mobile-hotspot

I'm not sure how to test whether the above are your issues or not. You'll have to research on your own. I had issues as my low cost provider was using band44 which wasn't supported. So, I just use my phone's hotspot.
PDAnet group I believe
Anybody have any luck with Verizon SIM cards? I can get it to load up it shows bars and it shows the network and everything but I can't get any actual data.
One of my favorite resources for APN settings for all earth carriers is:

unlockit.co.nz
 

Palumbum

Member
Jun 28, 2021
23
2
I don't think prepaid or post paid has anything to do with how it works. If the unit had the correct bands for lte and shows bars of service but no data is flowing, chances are it just needs the APN to be populated. There are different ways a service provider can provision those settings, and some of those methods apparently don't work on the Atoto, in which case you have to do it the old fashioned way (as mentioned above). This shouldn't matter if the service or post / pre / free / whatever, it's just how each sends provisioning details.

I can only share my own experience with Visible wireless and Mint, those are the only ones I've tried so far. Others have mentioned At&t works as well. I'd imagine most carriers will if the bands are supported by your unit that your carrier uses, and you have the ability to add your APN manually.

EDIT: if you don't get bars, likely that your unit doesn't support whatever LTE bands Verizon uses in your area. Then it won't work no matter what. I'm talking about when it sees towers but doesn't have data, which is what happened to me and at least one or two others in this thread.
Yeah mine showed 4G and bars. I’ll be with my vehicle tomorrow and will update this thread whether Verizon unlimited plan works or not. Just trying to look up a way to find those APN settings. I don’t own an android phone unfortunately.
 

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    Google Fi absolutely rapes you with charges for data. My teenage son was on it for a month and we immediately switched him back to Straight Talk.

    So @j-5 you used an IMEI switcher? I'm not sure what this actually does... you just 'fooled' the carrier into thinking they're providing service to a cellular phone instead? I don't know much about how to do that. Getting that one from T'eyes does it have to be used on a T'eyes device? I clicked in your post and it downloaded a file (to my computer) but it doesn't do anything. Does this need to be moved to my headunit and 'loaded' somehow?

    I just got my wife's new Joying installed, called Straight Talk and they said they just don't support car stereos, I told them I could put a card in it like a tablet and they told me to use a T-Mobile Straight Talk card, but when I asked about what bands it uses, they couldn't tell me - said I needed to get a card and put it in to know that, but I don't want to spend $50-60 AGAIN to get another card that won't work in my unit.

    I'm kind of at a loss.
    What I did is use an IMEI randomizer to simulate a pixel 5. Put those into the file using notepad (two different ones since I have 2 sim slots). Loaded the file onto a usb thumber and plugged it into the usb interface of the unit. My unit popped up a message saying “imei changed”. Then after a reboot the new IMEI was in the unit settings. Plugged in my USMobile sim card and it showed up on my account to register.

    My unit is an FYT with vendor ID=1.
    Us mobile uses the t-mobile and Verizon networks. The Verizon sim got no signal but the t-mobile one had all the bars.
    1
    So it appears all of the Big 3 in the U.S. utilize FDD-LTE Band 2 - but this begs the question why my previously-purchased new cards that should have worked on the AT&T network (one from Straight Talk and one direct from AT&T) would not work in my older unit.

    Do I have to somehow make sure the card I purchase is specifically for that band, or does any AT&T 4G LTE (non 5G) card, work on ALL of the AT&T bands?

    Forgive me if I'm asking really dumb questions here - all this compatibility of various cellular networks stuff has me spinning in circles.
    1
    First thing is to put in your SIM card and see if you get bars.
    I had two cards, one for T-mobile and one for Verizon. Only the T-mobile had bars.
    If you don't get bars, you don't have a network and nothing else will work.
    My radio info read the SIM card and told me all the deets on the network provider.

    I don't have a T'eyes unit just a generic FYT unit, and the "magic file" is just a text file named IMEI0 with 2 lines for IMEI numbers.
    1
    I will update - got 4G working again on my older Joying unit by changing APN settings. Now I have 4G again! W00T!

    Now to spend some time (when I have it) working on the new Snapdragon unit.
    1
    I just put it in. I don't know why the old card I had wouldn't show up, but the new one, since it was working my old old unit, I just swapped it over, rebooted and it worked. Didn't have to change APN settings in the new unit, either. Go figure.