Blackview BV9900 - Hardware Hacking General

Having and issue with my Android phone that is running Android 9.
Issues started from day 1 with the phone not allowing incoming calls from iPhones. Spoke to BV and was told no issues on their end.
Phone can only accept calls if I turn off LTE Enhanced. By doing so I lose my ability to send texts and do many other functions.
Now I'm having issues MAKING calls when LTE Enhanced is on. The call will connect, but after a few seconds it drops the call.
I'm using Verizon and they are no help.
BV had me record the log files but that proves no value to them.
There has to be a software glitch or some other issue that they cannot address.
Any help would be appreciated.
Sent from my BV9900 using Tapatalk

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[Q] [T-Mobile] Voice only working in some areas, data/text fine

Hi guys!
I have been having some issues lately with my calls just not working when I am at home. Incoming and outgoing calls are completely silent. My phone still rings, but I am always met with silence on the other end. Oddly, I can make and receive calls at work just fine. It just seems to be something about the area around where I live.
My texts and data work just fine. I haven't yet been able to identify what the issue is, I tried 2G only mode, to no avail. When I am home, I normally use Groove IP for outgoing calls to save on minutes, but still need incoming calls to work.
I have a 16GB Nexus 4 running the latest PA 3.10 kept updated through GooManager. I have refrained from trying a wipe, since I do not know that it will solve my issue.
Any ideas?

Anyone with Project Fi having service issues with the 6p

So I received the new Fi Sim card as the one in my nexus 6 wasnt compatible with the Nexus 6p. Went through the activation etc and I receive calls on wifi but not make calls on wifi or cellular, data is brutally slow. Waiting to hear back from Google on this.
I had Fi on nexus 6 and they did send a new Sim for the 6p, but I have to say that Data and Calls are better than in the 6.
Now have you tried putting it in airplane mode, then clear all app data of Fi, remove airplane mode and restart?
That worked for me when I had the Nexus 6
rlukas79 said:
So I received the new Fi Sim card as the one in my nexus 6 wasnt compatible with the Nexus 6p. Went through the activation etc and I receive calls on wifi but not make calls on wifi or cellular, data is brutally slow. Waiting to hear back from Google on this.
Click to expand...
Click to collapse
I have been on Project Fi since last friday with no issues. The service has been great I been getting LTE now where I couldn't before on just T-mobile. My download speeds has been around 16-35 Mbps:good::good::good:
I activated and it said complete, but it said data plan only from the Fi app and I could only make or receive calls over WiFi. I had to add my google voice phone number and run through the activation again and all is good now.
as they always see, ID10T Error. When i was at the activation screen I forgot to click Learn More and transfer GV number, since i had ported it back to GV. All is well now
Activated FI last night...so far everything works great except sending SMS. Receiving is fine though. Support chat today said give it 24 hours...will see tomorrow.
In general projectfi works just fine. As someone mentioned earlier, the first 24 hours was iffy with signal dropping to 0 randomly, worked fine from day two. I also see one other issue...I have no signal at nights or when I am closest to the router. I Wonder if radio is turned off and it jumps on WiFi for all network activity (including calls). Regardless... Had it for just a few days...like it so far.
tfly212 said:
Activated FI last night...so far everything works great except sending SMS. Receiving is fine though. Support chat today said give it 24 hours...will see tomorrow.
Click to expand...
Click to collapse
They told me the same thing when I activated 4 days ago. The only people who can receive texts that I send (either via SMS or Project Fi) are people on T-Mobile. Texts sent to my Verizon work phone or my girlfriend's Sprint phone never show up. And Fi's tier 1 phone support is terrible. Tier 2 was supposed to call me back two days ago, but apparently that can take up to 72 hours. I gotta admit, I'm not overly impressed so far
dominutz said:
They told me the same thing when I activated 4 days ago. The only people who can receive texts that I send (either via SMS or Project Fi) are people on T-Mobile. Texts sent to my Verizon work phone or my girlfriend's Sprint phone never show up. And Fi's tier 1 phone support is terrible. Tier 2 was supposed to call me back two days ago, but apparently that can take up to 72 hours. I gotta admit, I'm not overly impressed so far
Click to expand...
Click to collapse
Looks like I have the same issue. I'm just starting with Tier 1 support, so I guess I'll prepare myself to wait.
I have the same issue. I also tested with AT&T .. and messages are not received on AT&T phones also. Tier2 was supposed to contact me 4 days, but nothing. Me thinks that is because they don't know what is wrong, and they don't have a fix. I am still within the 15 day trial period, to I think the phone and the service are going back ...
I just activated and sent to a Verizon number using Textra and it sent and received just fine, maybe try a different messaging apk?
How's everyone's voice quality? When I called my friends Verizon number, they said I sounded tinny, they sounded fine to me.
Some service issues on all Project Fi phones is due to the lack of proper band 12 support. This seems to be the ongoing and very big issue now
If you have active band 12 in your area, I wouldn't switch to Fi service at this point
---------- Post added at 02:13 PM ---------- Previous post was at 02:10 PM ----------
jawiler said:
I just activated and sent to a Verizon number using Textra and it sent and received just fine, maybe try a different messaging apk?
How's everyone's voice quality? When I called my friends Verizon number, they said I sounded tinny, they sounded fine to me.
Click to expand...
Click to collapse
Fi doesn't support HD voice or VoLTE which both effect voice quality and VoLTE also effect signal coverage
dblml320 said:
I am still within the 15 day trial period, to I think the phone and the service are going back ...
Click to expand...
Click to collapse
I live in the country a bit and I know for sure that T-mo reception is terrible where I live, but I'm not sure how the Sprint coverage might be so was considering trying the Fi service - but it seems like the early reports that Fi cannot switch between Tmo and Sprint towers on the same call. Is this still the case, and if so, has anyone had any problems refunding in that 15 day trial period?
No Outbound Wi-Fi calling
My first week with Fi has been very frustrating, and like someone else pointed out, Tier 1 support is very friendly, but typically rather incompetent beyond giving you canned answers that anyone with slight grasp of technology has already tried (update the app, update the phone, switch to Airplane mode and back, use an open Wi-FI, delete your Wi-Fi, restart your phone, etc.).
I've been using TMO for three years and my downtown Seattle office has no cell coverage from TMO or Sprint, so I've been depending on TMO Wi-Fi calling. Fi seemed like the perfect answer for me. I swapped the TMO SIM to the Fi SIM in my new 6P and MMS/SMS works in and out, voice calls work inbound (via Wi-Fi no less), but outbound forget it. Unless the phone can dial out on cell, it just times out after 30 seconds. Multiple emails and calls with Fi support have told me every possible thing (some incredibly ludicrous--my favorite is cell phone tower issues in Tacoma, 35 miles away and we're talking about a Wi-Fi issue). I finally overnighted a replacement SIM. Same problem. I've filed debug logs with support and am still waiting for any advice. I'm about out of options other than just going back to my TMO SIM and relying on Wi-Fi calling that works.
TechScribe said:
My first week with Fi has been very frustrating, and like someone else pointed out, Tier 1 support is very friendly, but typically rather incompetent beyond giving you canned answers that anyone with slight grasp of technology has already tried (update the app, update the phone, switch to Airplane mode and back, use an open Wi-FI, delete your Wi-Fi, restart your phone, etc.).
I've been using TMO for three years and my downtown Seattle office has no cell coverage from TMO or Sprint, so I've been depending on TMO Wi-Fi calling. Fi seemed like the perfect answer for me. I swapped the TMO SIM to the Fi SIM in my new 6P and MMS/SMS works in and out, voice calls work inbound (via Wi-Fi no less), but outbound forget it. Unless the phone can dial out on cell, it just times out after 30 seconds. Multiple emails and calls with Fi support have told me every possible thing (some incredibly ludicrous--my favorite is cell phone tower issues in Tacoma, 35 miles away and we're talking about a Wi-Fi issue). I finally overnighted a replacement SIM. Same problem. I've filed debug logs with support and am still waiting for any advice. I'm about out of options other than just going back to my TMO SIM and relying on Wi-Fi calling that works.
Click to expand...
Click to collapse
I have been on Project Fi for almost a month now and I don’t have any issues calling out on wifi and I also live in Seattle. I’m also getting LTE at places that I couldn’t before with just T Mobil. And my cell bill is about half of what it use to be with TMO.
Just a thought, can your wifi call out issues be a router problem?
boxcar8028 said:
I have been on Project Fi for almost a month now and I don’t have any issues calling out on wifi and I also live in Seattle. I’m also getting LTE at places that I couldn’t before with just T Mobil. And my cell bill is about half of what it use to be with TMO.
Just a thought, can your wifi call out issues be a router problem?
Click to expand...
Click to collapse
It's doesn't appear to be a router issue. I can reproduce at multiple locations where there's only a Wi-Fi signal (welcome to South Lake Union and buildings that don't like 2.1 GHz signals). It appears that a very small amount of cell signal is being detected, but not enough for an outbound call to be initiated (which means it should use the much stronger Wi-Fi).
I have found a workaround by placing the phone in Airplane mode, and then turning on the Wi-Fi radio. Everything will work. Hopefully, the Fi developers can do a code fix to improve that scenario. Honestly, the outbound voice calling issue on Wi-Fi only is just a nuisance as I rarely make voice calls. I can always use my home VoIP provider with the built in VoIP dialer in the stock phone app.
As for pricing, I was/am on a TMO $30 5 GB plan (when you've got signal, I've seen up to 90+ Mbps). So Fi will cost a little more (and give me unlimited voice vs. 100 mins), but I'm hoping the Sprint/TMO combo will bridge the huge gaps in TMO data coverage in non-urban areas like I-5 from Castle Rock to just outside Portland).

Diverted call / forwarded call "icon"? on Pure Nexus ROM

Hi there,
I run a very small business and I'm occasionally on-site at my customers office most of the time. So whenever i'm out, i divert my office number to my Nexus 6P.
So the issue is that it's quite difficult for me to distinguish between a personal call or if it's a diverted call from my office to my Nexus 6P. Previously on Nokia or certain Samsung phones, there was an 'indicator icon' showing that it was a diverted/forwarded call. This helped me tremendously.
It's definitely a phone feature and *not* a carrier issue. Have downloaded 3 apps (2 free and 1 paid) from the Play store, but they all do not seem to work. Am on "Pure Nexus" ROM.
Any ideas how to get this resolved without carrying a separate phone ? Or perhaps i should contact the developer of "Pure Nexus" to get this resolved ?
Thank you and keep up the good work.
So the calls get forwarded and still show the number for the original caller? Every time I've used call forwarding it shows the number that they called which forwarded to me, not theirs.
Example, I call your cell directly from 555-1234 and you see that as the incoming number. If I called your office and it was forwarded to your cell, you see your own office number because that line is forwarding the call.
I guess it must depend on the phone system that is forwarding the call and how it actually works?
fury683 said:
So the calls get forwarded and still show the number for the original caller? Every time I've used call forwarding it shows the number that they called which forwarded to me, not theirs.
Example, I call your cell directly from 555-1234 and you see that as the incoming number. If I called your office and it was forwarded to your cell, you see your own office number because that line is forwarding the call.
I guess it must depend on the phone system that is forwarding the call and how it actually works?
Click to expand...
Click to collapse
Hi Fury, yes the calls get forwarded and the original callers number appears perfectly.
I believe it doesn't depend on the phone system because i've used 3 old nokia's before and stock Galaxy S2 and Note 2 and a call forwarded 'icon' appears... this enables me to know which calls that come in is actually a diverted call from my office.
If i'm not mistaken, they have also built it in MIUI ROMS... so it's not the landline handset or telco provider, it's definitely in the OS of the phone.
Perhaps i should just write to the developer of Pure Nexus to add this little request
Thanks for the reply Fury.
Maybe you should try Forwarded Call Notification latest version:
https://play.google.com/store/apps/details?id=joe.forward

Weird, consistent network issues

Have been using this phone for about 1 year and 2 months now. Used a multitude of ROMs as well. Disregarding the different battery lives and heating issues, some problems remain consistently.
When on call, be it a WhatsApp audio call or regular cellular one, after talking for a while I start having network issues.
1. I can hear the person but the other can't
2. I can't hear the person but the other can hear me
3. Audio breaks up between us
4. There is no audio
This only happens in long calls, say over 7 or 8 minutes. Also, doesn't happen always but majority of times. Problem persists in both device mic and headphone mic.
Sometimes others tell me they get my number unreachable or engaged, but in that time I have full bars of network and am not in another call.
It happens with all network providers I've tried, namely Airtel, Vodafone, Aircel, Reliance Jio. And I am almost always on Wi-Fi, so I don't think there is any issue of data messing up calling. And also I always have full bars.
Went to the service centre a few months back as well, they did something after which the call quality did improve, but other problems are still there.
Any ideas on what my problems could be and should I go to the service centre again and pay or get it checked out by a local repair shop??
All ideas are welcome.
Thank you.

Can not (sometimes) receive calls txts using a Verizon S8 on cricket wireless

I am using a Verizon S8 on cricket wireless. The problem I have is sometimes (many times) I can not receive calls or txts. I don't see missed call. The caller directly went to voice mail after 2 rings. After tried many methods, I still have this problem. I found this happens when aftrr there's no wireless activity for a few minutes. Once there's any wireless activity, e.g. sending txt, making calls, browsing internet (data), it then become normal and be able to receive calls txts for a while, and is able to receive txts previously not received (never get missed calls though). Anyone knows what's going on or had this problem as well? TIA!

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