Redmi Pro - Bluetooth/ Wifi Problems - Fix Under Latest Stable Miui


Jan 15, 2017
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#1
Never posted own thread in this forum, but would like to share the abovementioned/ my experiences so far about the Redmi Pro.

My Redmi Pro was bought locally in China for around 222 EUR, in December 2016 (at a Shenzhen shopping mall I believe, eldest brother bought it for me and took it to Belgium, Europe). It is the 4GB/128GB Business Edition version.

The Redmi Pro has pretty good specs, what I mostly love is the decent (but not great, but still decent :) ) OLED screen, as well as the 4GB Ram and 128GB storage (around 118GB available for the user I believe).
Camera is however just above average (better pictures can be taken through third party camera app, but I don't mind).

HOWEVER the dreadful battery standby drain problem as well as intermittent Bluetooth and WiFi connection drops were a pain in the a** ... .
The battery drain problem has a fix (flashing the 'fix deep sleep' zip file under TWRP recovery), however, through every MIUI update, Bluetooth and WiFi disconnection drops kept coming back ... . No such problems in airplane mode, but you do not by a smartphone to solely use it under airplane mode ... .

I stuck to the Redmi Pro, as I am a basic user only.
Unlocked bootloader, installed TWRP recovery and flashed and updated mostly Xiaomi.EU roms. (as well as the deep sleep fix file)
All in all more or less satisfied.

Xiaomi released in december 2017 a new MIUI 9 stable rom version v. 9.2.1.0. After a long time, which I overlooked for a while ... . Shortly after, Xiaomi.EU also released a new stable 9.2.1.0 version based on the official one.

And i must say and stress: this latest stable rom release has fixed all issues for me, for now!
Bluetooth and WiFi just keeps working, no restart/ airplane mode needed anymore, and also battery life (as well as in standby) improved dramatically.
I can recommend everyone to install this 9.2.1.0 stable MIUI version as soon as possible!!!!

I firstly performed a hard rest under TWRP recovery, which deleted everything (including android os) exept TWRP.
I mounted my RedmiPro through TWRP as a flash drive to my pc, and copied the latest stable rom file.
Flashed it under TWRP, did not flash the 'fix deep sleep zip', and just rebooted into android.

After more then 4 days of intensive use, for now, I haven't had any issue with this smartphone any more. Bluetooth and WiFi work stable, as well as battery drain not noticed anymore (device goes to 'deep sleep' when screen is off). I do however live in a city and do have LTE 4G connection on both sims, which could be the reason that the deep sleep issue is not occuring at the moment.

I will test further, and will update this post within a month or so. Whether Bluetooth and WiFi will keep working, as well as regarding deep sleep battery drain.

After more then a year, perhaps I will finally by 'fully' satisfied about this smartphone? Who knows, fingers crossed, didn't expet a new MIUI 9 stable rom release anymore, but thank you Xiaomi!
 
Jan 25, 2018
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#2
Hi, how is the Bluetooth issue since you reflashed?

I'm going mental trying to sort my redmi pro 4 as it keeps dropping bluetooth connections at random when in the car on calls.

ImI on global stable 9.2.3
 

Posi1

Members
Jan 16, 2016
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#3
I have same problems with Bluetooth constantly connecting/disconnecting/connecting. I am on the latest stable ROM (9.2.1.0).
Maybe I switch back to the older ROM version. I think with the 8.5.4 version I did not have the problem.
 
Last edited:
Jan 15, 2017
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Time for an update!
WiFi and Bluetooth work steady most of the time. If I reboot my redmi pro after a week or so, then they keep on working consistently. Otherwise, old problems can come back after a week or so, but in the past under older weekly/ stable ROMs , problems kept reoccurring every day.

I also discovered that WiFi and maybe even Bluetooth issues are related to a specific WiFi security principle. I live in Belgium and have cable internet access through Telenet. As a Telenet cliënt, I have the possibility to make use of their WiFree WiFi network around Belgium. To be able to login into these WiFi hotspots spread out around Belgium, you have to login into the secured WiFi SSID TelenetWiFree. A username and password have to be entered to bypass security. If this SSID is configured as known WiFi network under the redmi pro, even with this latest stable miui ROM, then all of a sudden all former WiFi and Bluetooth problems reappear... Connection drops with Bluetooth and authentication issues WiFi . Only reboot helps, for just a couple of hours max. If I then delete the known TelenetWiFree keyword SSID, and reboot phone, everything works perfectly again.... . How is this possible? But this could give a clue to what the true cause/ problem could be under all miui versions regarding Bluetooth and WiFi? Really weird and a bit frustrating in the end, as having free WiFi around Belgium is really handy, which I cannot use through the redmi pro... .

Also, if no active LTE connection is available, battery problems keep reoccurring... .

Hope to have updated you guys adequately. Will give future updates in this post.

Verstuurd vanaf mijn Redmi Pro met Tapatalk
 
Jan 15, 2017
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#5
Just discovered that above-mentioned TelenetWiFree WiFi authentication uses the EAP protocol. I reconfigured this WiFi hotspot protocol to, instead make use of peap encryption I believe, make use of TTLS as EAP protocol. Fingers crossed that WiFi and even Bluetooth problems stay away, will update.

Verstuurd vanaf mijn Redmi Pro met Tapatalk
 
Apr 16, 2018
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#6
Axelmett,

wow, your Telenet story sounds soooo familiar! It also would explain why my wife never has the problem, and I do.
Must say though that my WiFree already runs over PEAP, so this may no solve the problem.
Anyway, reason enough for me to just kick out the WiFree config alltogether.
Will also post here if I notice improvements.

Spiffo
Redmi Pro, still on stock MIUI Global 8.0 (8.0.7.0(LXKCNMA)) (3Gb Ram, 64 Gb internal)