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phoebee phoebee is offline
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Join Date: Aug 2017
Car: 428i
Default JB4 mobile IOS problem - 09-08-2017, 10:15 AM

F32 428i n20 2014+ ewg

I using iPhone5 iso version 10.3.3

Sometimes jb4 mobile doesn't work

Bluetooth is connected.

But gauges don't work.

And alert "Unable to read/validate settings. Check you user/meth settings to ensure they are correct."

So I tried lunch jb4 mobile on other iPhone6.
It worked.

Omg so confuse. Why my iPhone5 couldn't read validate setting??

Last edited by phoebee; 09-08-2017 at 07:18 PM..
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CedarPerformance CedarPerformance is offline
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Posts: 116
Join Date: Aug 2017
Car: All of 'em
Default 09-08-2017, 10:21 AM

If I am not mistaken, there may be some sort of conflict with the bluetooth chip your iphone 5 uses. Might be older tech, lower sample rate, problematic in general.

Check out this thread:

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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Join Date: Jan 2008
Default 10-02-2017, 09:48 AM

Android user here.

Best to contact Donnie @ JB4 Mobile via his thread, he knows IOS best.

Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Mike_L Mike_L is offline
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Join Date: Jun 2014
Car: 2017 X3 xDrive35i
Default 10-02-2017, 10:16 AM

Its the iPhone 5. I ditched my iP5 years ago because it didn't play nice with JB4Mobile. As far as I know 6S and newer work well with it. 6 is iffy.

Mike Levy
2017 X3 xDrive35i
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Turboh Turboh is offline
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Join Date: Nov 2017
Car: 2017 BMW 340iX
Default 02-21-2018, 05:44 PM

Is use iPhone 4s. I have two of them. They work fine for awhile until power drops below 50% or so. Then...not able to establish contact...etc.

Tried over and over and just concluded the bt connection was too weak and erratic. I did notice that the bt icon appeared weak too.

I prefer the iPhone SE. It works fine so far. Fast connect and the icon was nice and bright.

We will see.....so far.

2017 340iX with M track handling package, 6 speed manual, BMS intake, and JB4 piggyback; EWG and FP wires; 93 octane; and fun with Honda S2000; Ninja Z1000.
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