Call failure - Xiaomi Mi Max Questions & Answers

I've got repeated incidents of failure to initiate calls
Phone drops it without even the first ring going out.
There's network, excellent coverage area. So I switched the SIM to my nexus 6 P, calls go thru fine. What the hell is wrong with this phone.
Problem shows up intermittently cannot be reproduced. I'm running China dev original, device is 64/3, not rooted.
Pls advise, thanks
Sent from my MI MAX using Tapatalk

Related

Call Dropping

Hi All,
Loving this phone so far, but one that that really bothered me is the call drops and the signal reception on this phone. Coming from a S4, I had no problem making calls in the house, but after I switched to ONE, I get drop calls all the time. Anyone else running into this issue with call dropping and low reception? Thanks!
I can chime in on this a little with some different insight. I fly small planes (172's etc) and I have a Bose bluetooth headset that allows me to take calls. With my rezound it was amazing where I could get coverage. Sometimes 5000 feet above the ground.
Yesterday I flew a normal flight path and was without data for most of the flight and without cell at times too. I was only 1500 feet above the ground. Verizon's bubbles are much larger than sprints. I can tell you that my phone with sprint was useless in the air at all. That was the number one reason I ended up on vzw.
I am hoping a radio update fixes some of these issues. For now, they are definitely flaky at best.
Sent from my Nexus 7 using Tapatalk 4
There are a few threads already about reception issues. It seems... Sporadic. Some people have issues, some don't. Me personally, my One has just as good of reception as any other phone I have had. No issues at all here.
Sent from my HTC One.
Call Dropping Issue on unlocked AT&T Samsung S3(SGH I747)
Hi There,
I am using This unlocked mobile in India. This has the problem of Call dropping issues most of the time. If every one wants to reach me, it just give the message of not reachable.
I put a app called USSD/MMi code fix from App store. But , it only shows the network provider and the signal level. But yet this issue was not solved.
Give some more fixes for this issue.

Signal cutting off :(

hi all...
currently using tmobile galaxy note 3 with an at&t sim. the phone is in good standing. not blacklisted. i love the phone. currently using slim rom (latest). ever since i got the phone, i been having signal issues. there are times when the phone signal cuts off, no signal at all. and then there are times when, even though, it shows a signal no one can call me, it just rings or cuts the caller after a few rings. sometimes my gf would tell me shes been calling me, but i never got any calls/miss calls. sms would go through though. and when this is happening i would try to call a number, nothing happens, no ringing, no sound at all coming out of the earpiece. a reboot would remedy the issue. but its starting to get annoying.
can anyone help me out here. am i the only one with this issue?
thanks in advance.
wondering if i should install a at&t modem. can anyone tell me if that is a good idea??
are there any hardware differences between the ATT version and the T-Mobile version? I have not done the research, but it is possible that the ATT version does not have the correct GSM/LTE bands to get a good connection on T-Mobile.
I had similar issues using a Verizon Note 2 on T-Mobile and AT&T
I have the same issue. I even tried redoing my apn's and the problem continues...
ukcain said:
I have the same issue. I even tried redoing my apn's and the problem continues...
Click to expand...
Click to collapse
at least now i know i am not the only one with the issue. i hope someone with more knowledge of the issue reads this and helps us.
regarding the frequency bands used, i am not sure.
I have issues if I don't use att after day and use tmobile it won't load data just voice, I turn it off and switch sims and load the data, turn off, switch back to att sim all is well.
Sent from my SM-N900T using Tapatalk

calls are disconnected after few minutes

hi all,
stock 551ML no root, the calls running on SIM1 (4G) gets disconnected after 5/10 minutes. i suddenly see the radio bars disappearing, i can't hear anymore the called party, and then the call drops. Tried with 2 different carriers on SIM1. The phone is always enabled with 2 SIM's, but on the second one (whatever the carrier is) there's no such problem. I think this phone has large issues when dealing with 2G/3G/4G swap, signal quality on SIM1 is terrible (tested in comparison with wife's iphone6+ with same carrier same location) and often i lose signal on SIM1. Definitely not a work phone in this way. any idea? can a full reset improve the situation?
Please ensure firmware is updated to latest version. Next please try performing a hardware reset including cache wipe partition. http://www.asus.com/us/support/FAQ/1011956/
If the problem continues then it may be a hardware issue with the SIM slot and will require RMA service.
Sincerely
ASUS_USA
[email protected]
after few weeks i can say more about this issue, on SIM1 the 4G slot. (stock phone updated and wiped completely)
1) carrier signal reception has now slightly improved with .59 and .63 update
2) problems on switching from 4G to 3G still there, when 4G signal is poor the phone is not able to detect it, and tries and tries and tries sending data to nowhere. after a minute or so, switch to 3G happens and i got network connectivity again
3) comparison with iphone6+, samsungS5 and sonyZ3 (same network, same location) is still terrible, while i got no network, iphone does and loads the pages, slowly but it loads the full page. i think here is the price difference between the two -> antenna, radio, optimized software for any signal condition
4) under bad (bad from a 551ML point of view) signal conditions the battery drains a lot more faster, and that's fine but at least i would like to use the phone, to receive calls, messages, whatsapp and so on.
5) during a call on SIM1, it still happens that signal disappear and i the call is dropped, less frequently than i had before .59 update, but still happens.
6) i'm calling using SIM2 BTW, SIM2 on 2G has no issues.
i will be soon able to compare with honor7 (it should have a very good optimization on the radio part) and let you know.
bye
I am on AT&T in the US and having a similar problem and hoping someone can help except for me it is SIM 2 that is the problem and for me it is at home. Last night I was on a call that kept dropping, and it was not a good thing at all and I had to end the call. I pretty much cannot sustain SIM 2 calls in my house but SIM 2 elsewhere is okay; calls on SIM 1 are perfectly fine and with my previous phones (Note 3, iPhone, Windows Lumia 1520) no reception problem history ever at all. So this clearly is a device issue and not an AT&T issue as I get good coverage in my house. I had two phones up until a month ago when I opted to consolidate by getting the ZF2.SIM1 is perfectly fine most of the time-I've never dropped a call although a couple times I have to say I've not heard as well for a moment as I could, so I question if my house and the Zenfone2 are a good match, although that is really a weird thing as I live in a major suburban metro area that is not a coverage problem in any way shape or form with any dead spot problems, so I am wondering if something is wrong with my hardware and I need to exchange my phone. I'm going to have to pop my SIM 1 back into my Note 3 in the interim and forward calls on my second line in the interim in the meantime if that's the case . (my windows phone takes a nano SIM) and send my ZF2 back for an exchange Should I do a hard reset? Why would my house be a problem? It's not a dead spot area or remote or anything like that. I really like this phone already got a new SIM 2 card once before when I had problems at first but it seemed to be better until I then tried to make a c all yesterday and it wouldn't work.Could my phone be defective? Hard reset?? My software is up to date.
Sent from my K010 using XDA Free mobile app
After latest updates and various test i can say that signal coverage and battery life has been improved so much. Thanks a lot asus, it's a pleasure to work with this phone now. Keep doing the same good job!
Federic0 said:
After latest updates and various test i can say that signal coverage and battery life has been improved so much. Thanks a lot asus, it's a pleasure to work with this phone now. Keep doing the same good job!
Click to expand...
Click to collapse
Glad to hear things worked out for you. My situation didn't work out. I just returned the Zenfone yesterday. I had gotten the replacement phone through ASUS, still replaced yet another SIM card, and the problem with my SIM 2 persisted and got even worse. For me, the SIM slot being 2G did turn out to be the destructive feature of the device. My area is too upgraded for it apparently. You're the only other person I've come across that has referenced SIM 2 usage to me, so I get the sense that most people are just using the ZF2 as a single SIM and don't have a second phone line or data line. Therefore I can understand people being happy overall as it's a decent device for a single SIM user. You are lucky that your SIM 2 coverage is good everywhere. Mine was good in some areas but certainly not in and around my house and there my SIM 2 was unable to sustain phone calls. I didn't care about data-I only wanted phone calls but I couldn't do calls even.I had no cellular connection and my SIM 2 would X out and drop off all the time.
I never had a problem with SIM 1. I always got calls just fine and I found that ASUS always provided updates and I noticed changes in battery life. I was pleased in every other regard but the very purpose that I bought the phone for -to be able to get calls to both my phone lines. I do think ASUS dropped the ball with the 2G slot and need to make their next model with both slots supporting LTE. They me might get me back as a customer if they do.
Sent from my K010 using XDA Free mobile app
It looks like I am not the only one who has the sim 2 signal issue. My phone has this issue from day one, the signal of sim 2 just comes and goes all the time. Software update doesn't help at all. I've also tried putting a new sim card, but still have the same problem. I think this is a hardware issue.

Dropping data on Verizon?

Coming from a moto droid maxx and liking the native super fast Google experience with Marshmallow.
Phone is dropping data periodically on Verizon and will only pick it back up by changing the preferred network type. Anybody else having this problem? If not, maybe I just have a bad device.
Thanks
Sent from my Nexus 5X using Tapatalk
I am having the same problem. I posted about it a few days ago. No solution yet unfortunately
Sent from my Nexus 5X using Tapatalk
No issues here but my house is in a poor reception area. A quick toggle to airplane mode when I get 3g will get me back on to 4g. I'm used to doing that for as long as I can remember, not just this phone
My Nexus 5x on Verizon comes Mon or Tues. I sure as heck hope it doesn't do that. That would be a major problem, as I'm finally getting a real Nexus on Verizon to get away from buggy aosp/cm roms for Samsungs on Verizon.
I just saw this thread. The same exact thing is happening to me.
Is there any negative to having the preferred network type set to "LTE / CDMA". Technically, that is what Verizon's network is.
Do you still sporadically drop data when your preferred network type is set to LTE / CDMA? I just changed it this morning. So far so good.
I was set to LTE/CDMA when it first happened and was not on WiFi.
Since then, tried different apn settings and Global instead of LTE/CDMA with no luck. Just tried setting cellular data to on, even when connected to WiFi.
Over the past 2 days it has happened 3 times, so frequency isn't that high but definitely an annoyance.
Sent from my Nexus 5X using Tapatalk
That sounds pretty frequent to me.
Hey, my quoting function isn't working, from Tapatalk app.
I just stuck my VZW nano SIM in, didn't adjust any of the options, no problems with data drop thus far
Ya I've had my 5x since Tuesday at 11 am. No network problems
No problems here, signal strength is better both at home and work as compared to my prior phone.
Maybe try a new nano sim from Verizon? The corporate stores will give them away for free. (Have seen posts where folks say the customer service line will mail them for free as well.)
Just adding my experience to the thread: my Nexus 5X on Verizon network is struggling daily with maintaining a cellular connection. I have no issues if I'm in an area where you would typically have a strong signal. However, when I'm in the 1 or 2 bar range, I cannot even receive text messages, much less data. The phone REALLY struggles with group texts. I'm going to full reset and see if that helps things.
Noticed that dropping data seems to coincide with incoming MMS messages, specifically group texts.
Sent from my Nexus 5X using Tapatalk
I am seeing this as well. What text messaging application are you using....
---------- Post added at 11:26 AM ---------- Previous post was at 10:36 AM ----------
Did a full reset help at all?
Having the same problems. I spoke to a tech at Verizon and they said the SIM card I'm using is being "retired" (their words) and I should go to a retail store to get a replacement. This was after trying to dial their automated smartphone activation number and ending up on the line with a tech. Going today to get a new SIM card and will post the results.
Experienced this with both hangouts and messenger. Hopefully the SIM card resolves it. Keep us posted !
Sent from my Nexus 5X using Tapatalk
Same issues here even with a new SIM...I also noticed it doesn't go to 3G, its either LTE or nothing? Group messaging is pretty much worthless... Sending phone back and going back to Moto X Pure...had that previous and absolutely no issues
Update: new SIM seems to have fixed the problem with drops. Tested several group MMS and it seems to be OK. Verizon reps were clueless on activating the SIM and took a while to finally give in to my request to just take the card home and activate in my old Moto X. I activated it with a Verizon rep on the phone and then transferred the SIM to the N5X with no issues. Got immediate LTE and was able to do everything as expected.
delete
stigmato said:
Update: new SIM seems to have fixed the problem with drops. Tested several group MMS and it seems to be OK. Verizon reps were clueless on activating the SIM and took a while to finally give in to my request to just take the card home and activate in my old Moto X. I activated it with a Verizon rep on the phone and then transferred the SIM to the N5X with no issues. Got immediate LTE and was able to do everything as expected.
Click to expand...
Click to collapse
Is your signal strength any better or worse with the new sim? My nano sim is ancient and wondering if it's one getting retired...
Signal strength is the same and unfortunately the problem came back. It's actually my wife's phone. I bought one for her and one for myself. Mine has been fine on Verizon since I switched from my M8 but she's been having the signal drop problem. The new SIM did not resolve it permanently. I'm requesting a new device from Google today.

random loss of signal

I have a 128gb pixel XL with Verizon, which I purchased through verizon as well. Randomly at times just as I'm going to place a call it will start ringing and then disconnect and it will show loss of signal. This has also happened while I was on a call. I'm on the latest firmware as well. Has any body else ran into this issue?
I ran into this last night. I'm a sprint customer with pixel xl ordered from Google. I am on V software. It could just be the fact it's only connected to one 4g band which has low strength in the area we were at during the drop times. Mine hasn't done it since last night might have been in a dead zone
Yes, this has happened many, many times to me. I have a replacement coming that hopefully will take care of it.
Sent from my Pixel XL using Tapatalk
droidiac13 said:
Yes, this has happened many, many times to me. I have a replacement coming that hopefully will take care of it.
Click to expand...
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For me its switching from band 13 to band 4.
I don't have this issue at all on TMO but in my area (Chicago) TMO is exclusively band 4. So this would lend some support to the possibility that this is happening when switching bands as I don't ever switch bands and don't have the issue (3 different Pixel devices that I've used since launch and none have exhibited this behavior).
I never had this issue on my Pixel XL, but then when I switched to the Pixel it would drop every single call I made and take 2-3 minutes to get a signal again. This was using the Verizon SIM card it came with. I then got a different SIM card and while it hasn't dropped a call since, I still notice that randomly throughout the day it loses signal where I have never lost signal before. I then wait 2-3 minutes and all of a sudden, it's back to strong LTE signal.
I'm on the fence about RMA'ing it. Anyone have any thoughts on whether or not this is a software or hardware issue? I don't want to be stuck with this problem.
-Collin-
Any resolution to this yet? I've tried swapping the sim to no avail. Running custom kernel and pure Nexus.
I'm on Project FI and sometimes the phone would switch to T-Mob for no apparent reason, which has extremely bad signal. While USC has over 100 times better signal, the phone for no apparent reason would switch to crap. That usually results in no calls being made at all. One trusty remedy is type in a dialer code to switch to next provider.
jnyce87 said:
I have a 128gb pixel XL with Verizon, which I purchased through verizon as well. Randomly at times just as I'm going to place a call it will start ringing and then disconnect and it will show loss of signal. This has also happened while I was on a call. I'm on the latest firmware as well. Has any body else ran into this issue?
Click to expand...
Click to collapse
I also have the 128GB XL (quite black) from VZW. I had absolutely no issues with it until about 2 weeks ago. That's when I started experiencing this same issue. The signal bar goes clear and i lose service for a few moments. In watching the SIM status, I can see where the status will go from "In service" to "Radio off" to "Out of service" back to "In service." I also took screenshots of it doing this. The weird thing for me is that it only happens when I'm at work (I usually have full bars for reception). VZW seems quite baffled at this issue. They have replaced my phone twice. This 3rd phone is doing the exact same thing the other 2 were. I did a chat session with Google Support, and the 1st level tech I chatted with seemed unaware of the issue. My wife has the same phone (silver), and she hasn't experienced this issue yet at all. We were thinking about bringing her phone to my office to see if hers will display the same symptoms mine does here. Nobody else in my area has any reception issues. It's not a huge inconvenience while I'm at work since I have a desk phone. However, it is rather annoying when I cannot send a text or make/receive a call because my cellular radio is resetting itself constantly.
I couldn't post my screenshots since I have < 10 posts...

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