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Just curious on how Verizon can embed software into phones to block *#0*# and *#7343*# diagnostics menu and why do so.
Does flashing with any firmware bypass this with odin?
It just makes testing so much easier when this is available.
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@andre_faughn . Which Samsung phone do you have?
Yes, Verizon has final say what goes into the firmware on Samsung phones that they sell.
Tmobile and AT&T do the same.
It also could be that Samsung has retired the codes you mentioned and changed the access code for the diagnostic menu, or Verizon disabled them as you suggested. A very good reason why it would be disabled or changed is because Galaxy 2 ,3, 4, and early 5, had a specific order you go through the menu and it would unlock the phone permanently. Obviously, the telecoms aren't happy about this, especially when these phones are sold at a discounted price.
Alternate ROMs may have these codes still.
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That makes sense, I was just curious to why and how they do it, being the only carrier that limits that capability. I do repairs for a company with 14 stores who sell used phones so its pretty much every model I work with. Thank you for the information I really appreciate it.
@andre_faughn no problem. I have a Galaxy S8+ that was originally Verizon FW, and I followed a reddit thread on how to flash to stock unlocked FW. This brought back the diagnostic command.
I know this is an old thread, but I haven’t had much luck on this. I have an UNLOCKED S10+ on Verizon. I bought it directly from Samsung, and it is clearly unlocked. I am unable to access the diagnostic codes on the Verizon network. I didn’t think of trying it before I put their SIM in. I have tried it after clearing the partition cache , SIM in, SIM out, even in safe mode and every combination thereof. How does Verizon block it that way? Is it possible to bypass it? I’ve talked to Verizon Tier 2 CS and they were unable to help. My local store wasn’t much help either. Any ideas?
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You need to go buy one of those BYOD prepaid sim cards from a different carrier like att or t-mobile. Think they are usually $1. No need to subscribe to the service though. Pop your sim out and put that in and your secret *# codes will be unlocked. Unfortunately when you put your carrier sim back in* most likely verizon* the codes gets blocked again
*#0*# is not working
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Looks like you have to use My Verizon app for diagnostics
*#0*# not working on any Verizon Samsung phones. I have an S8+ on TMobile and Note9 on Verizon. The diagnostic menu code worked fine on the S8+ on TMobile but not the Note9 on Verizon. I swapped the SIM cards be and did the necessary restarts. Voila! Now the code works on the Note9 on TMobile but not the S8+ now on Verizon. Ergo, the problem is NOT the device but is the fault of the carrier, Verizon. Why is Verizon so crappy about letting us diagnose our own phones?
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