OnePlus 8 US unlocked version NO wifi calling option/ no DUAL SIM SUPPORT yet - OnePlus 8 Questions & Answers

Just got 10.5.7 on my OnePlus 8. No DUAL SIM SUPPORT yet. Still no WiFi calling feature is showing up with VERIZON WIRELESS sim.
Any one has same issues?

All I know when I had my unlocked OP 8 Pro on T-Mobile wifi calling absolutely was there and worked. Sounds like Verizon isn't provisioning that with the SIM to me..
Sent from my IN2017 using Tapatalk

Correct I sent mine back last week... I wanted to keep the phone but wasn't ready for prime time for verizon.

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VOLTE On TMobile & ATT?

will volte work out the box for TMobile ? They won't activate phones on their network after a while if they don't support VOLTE.... Or any plans to update it in the near future. When will this go on sale in North America?
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I am currently on T-mo, it doesn't do VoLTE currently, I know its possible via root and changing parameters. ALSO they just enabled VoLTE for their ROG phone 3 via an update so I will assume they will probably do the same for the ZF7, if not I will have to root it.
I asked an asus rep about sale in NA and they didn't have an answer from marketing team, so I bought mine on eBay
I'm beginning to think they will sell in in america especially if they enable volte for TMobile like they did the rog 3. I'm waiting to see if they enable volte on the 6 and the 7.
And then there's the OnePlus 8T coming in going to weigh my optione
Sent from my ASUS_I01WDX using Tapatalk
https://twitter.com/MishaalRahman/status/1311888502188109824?s=19
This guy apparently has VoLTE already on his phone, unsure how though.
Will this work on att in the states? Also which model if so?
ATT will ONLY work upto 3g. You will see an H on top the signal bar which indicates a Enhanced 3g speed also know as HSPA speed connection. I have tried 2 new sim cards. I have tried several APN's I have tried all updates and a reset. No 4G and no 5G on ATT. Unless someone can tell me something new, this phone will not FULLY work on ATT. Text works. Calls work. Internet is sort of hit and miss with decent signal but again rather slow.
T Mobile will ONLY work upto 4g. No Volte although it seems to have the capability of Volte it cant not work with Tmobile Volte because it seems the cell bands are not compatible. Text work. Internet works rather fast, Good solid signal however no 5G and no Volte due to incompatible cell bands.
I did research on this subject and found that the ATT cell bands for everything including 5G do seem to be compatible with the 7 pro but again, it does not FULLY work oddly
I also did research on Tmobile cell bands and the bands for 5G are not even close to being compatible. Volte is also non compatible. 4g is compatible and works..
THIS IS MY OWN PERSONAL EXPERIENCE TODAY AS I PURCHASED A SIM FROM EACH PROVIDER ( THIS IS A DUAL SIM PHONE) AND PLACED THEM BOTH IN THE PHONE.. I DID EXTENSIVE RESEARCH>>>
IF ANYONE CAN GET THE PHONE TO DO 4G or 5G ID APPRECIATE THAT INFO>>
ASUS NEEDS TO DO AN UPDAT FAST BEFORE PEOPLE START TO RETURN THIS DEVICE. THIS AGE IS ALL ABOUT 5 G.. THIS PHONE IS NOT COMPATIBLE WITH USA. I DO NOT SEE HOW AN UPDATE WILL FIX THE PROBLEM SINCE THE PHONE IS ONLY PHYSICALLY CABLE OF A SPECIFIC SET OF BANDS WHICH ARE NOT NOT NOT THE SAME AS USA BANDS

Dual SIM / Google Fi

Does anyone have any clue as to whether or not I could run a Verizon SIM and a Google Fi SIM on this? I currently have the Google Pixel 4XL unlocked using a Verizon SIM and a Google Fi eSIM and was looking to get the 8T as a replacement. But I need both SIMs to work in the phone.
I travel the US and in many places I have spotty signal on one or the other and need to be able to switch between them.
I have been reading that the 8 and the 8 Pro have had (or still have?) issues with the dual SIM not being available.
TIA
Inane65 said:
Does anyone have any clue as to whether or not I could run a Verizon SIM and a Google Fi SIM on this? I currently have the Google Pixel 4XL unlocked using a Verizon SIM and a Google Fi eSIM and was looking to get the 8T as a replacement. But I need both SIMs to work in the phone.
I travel the US and in many places I have spotty signal on one or the other and need to be able to switch between them.
I have been reading that the 8 and the 8 Pro have had (or still have?) issues with the dual SIM not being available.
TIA
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If you have the esim for fi and have the unlocked dual sim you should be fine. I converted my 7t to the international dual sim and used a T-Mobile and a Verizon sim without issue. If they didn't have dual sim available in assuming they were carrier locked firmware

Sim unlocked T-Mobile A71 5g on Cricket

I am using a sim unlocked T-Mobile A71 5g with a cricket sim. VoLTE does not work. If I flash the AT&T firmware onto this will it allow VoLTE to work? Will it relock the sim unlock? (I highly doubt that is the case, but want to cover my tail.) Will it allow me to use LTE band 66?
Thanks
HOw is Cricket not blocking your acccount? I bought one for my mom and its unlocked for ATT network and it works for like 5 mins and then says its not compatible. I masked imei with ed exposed and still cant get it too.
jshealton said:
I am using a sim unlocked T-Mobile A71 5g with a cricket sim. VoLTE does not work. If I flash the AT&T firmware onto this will it allow VoLTE to work? Will it relock the sim unlock? (I highly doubt that is the case, but want to cover my tail.) Will it allow me to use LTE band 66?
Thanks
Click to expand...
Click to collapse
Hey if it's rooted you can use short cut master lite and open Cid manager and it will change your csc and network you can pick AIO which is Cricket .
I am not rooted. I heard that that google pay and Netflix quit working if you root a phone. Haven't tried rooting a phone in the last 3 or 4 years. Kinda out of the game.
I am having a similar issue. My phone is an unlocked T-mobile and on AT&T TOGO. I keep getting my outgoing calls redirected to AT&T cust srvc. They say my phone is not VoLTE capable and therefore will not work after 3G sunset. T-mobile support site says VoLTE is enabled by default, just that there are no settings to turn it on or off. Wondering whether it's safe to flash with AT&T ROM? Or maybe generic Samsung ROM if available?
Please I'm in Nigeria, i bought this A71 5G front a vendor at second hand. But my local sim card won't work on the phone.
How do i unlock sim?

ATT on T-mobile

I am thinking of purchasing a Samsung Note 20. If a phone is unlocked I assume it would work on T-Mobile. My question is if I purchase an ATT variant, I know the phone would work with a T-mobile sim, but will VOLTE (wireless calling) work if it an ATT branded phone and wether there's an issues with updates.
Thank you
bobn27613 said:
I am thinking of purchasing a Samsung Note 20. If a phone is unlocked I assume it would work on T-Mobile. My question is if I purchase an ATT variant, I know the phone would work with a T-mobile sim, but will VOLTE (wireless calling) work if it an ATT branded phone and wether there's an issues with updates.
Thank you
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Click to collapse
Basically it should work.
According to the following thread, there might be some issues using 5g though:
At&t Note20 Ultra unlcoked on T-mobile help
I have my at&t note 20 ultra unlocked but have mt T-mobile sim and only internet works! Help. I cannot receive calls or texts- i pop ina Verizon sim and everything works. So I confirm its unlocked. Only with my tmobile sim. Tried apn settings and settings reset and factory reset.
forums.androidcentral.com

Oneplus 8 TMO (IN_2017) can no longer connect to Verizon after OOS 13 (IN_2017_11_F.46)

I subscribed to USMobile (Verizon sim) 4 month ago and my oneplus 8 (TMO, IN_2017) was unlocked since day 1. I was able to connect to Verizon network with OOS 12.1.
Then, I upgraded oneplus 8 to OOS 13 and then I noticed that I can no longer connect to Verizon network. No phone call, txt and internet. I took my Verizon sim out and put it in iphone 11 and it work. I borrowed my wife tello (t-mobile) sim and put it in oneplus 8 and it works.
I checked oneplus network unlock status and it remain unlocked. But oneplus 8 (OOS 13) just cannot register itself to Verizon network.
What can go wrong here? Did OOS 13 lock the carrier to t-mobile only?
Or, Verizon did not whitelist oneplus 8 OOS 13 (IN_2017)?
Any idea?
jasonring said:
I subscribed to USMobile (Verizon sim) 4 month ago and my oneplus 8 (TMO, IN_2017) was unlocked since day 1. I was able to connect to Verizon network with OOS 12.1.
Then, I upgraded oneplus 8 to OOS 13 and then I noticed that I can no longer connect to Verizon network. No phone call, txt and internet. I took my Verizon sim out and put it in iphone 11 and it work. I borrowed my wife tello (t-mobile) sim and put it in oneplus 8 and it works.
I checked oneplus network unlock status and it remain unlocked. But oneplus 8 (OOS 13) just cannot register itself to Verizon network.
What can go wrong here? Did OOS 13 lock the carrier to t-mobile only?
Or, Verizon did not whitelist oneplus 8 OOS 13 (IN_2017)?
Any idea?
Click to expand...
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Scour the web for the correct APN for Verizon 5G.
rodken said:
Scour the web for the correct APN for Verizon 5G.
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Tried that and work with US mobile support on reddit and I still cannot register oneplus to verizon network.
jasonring said:
Tried that and work with US mobile support on reddit and I still cannot register oneplus to verizon network.
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Click to collapse
Did you contact VZW to have your IMEI reprovisioned under their network?
rodken said:
Did you contact VZW to have your IMEI reprovisioned under their network?
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Click to collapse
No. Just curious, I am on US Mobile Verizon network. Should I contact VZW or US Mobile for this?
jasonring said:
No. Just curious, I am on US Mobile Verizon network. Should I contact VZW or US Mobile for this?
Click to expand...
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Although, US Mobile is an American hybrid network operator on Verizon and T-Mobile's cellular network
-- You should contact Verizon first.

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