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Class 80x mobile phone use whilst charging under electric

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Lozzy0603

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Joined
3 May 2016
Messages
63
Hi all,
So I thought I was imagining things before, and to be fair this is still a very tenuous link:

When I'm charging my phone on a GWR Class 80x and the train is under electric traction and on the move, the screen on my phone behaves very oddly. Double presses, no presses, missed presses. As if the calibration or response of my phone screen is wayyyy off.
If I unplug from the charger, everything goes fine again.
If the train is in a diesel section, west of Bristol Parkway for example, and charging off the train socket, everything is fine. If the train is on electric traction but at a stand-still, everything is fine, only when on the move.
I've never seen anything like this charging off any other source with the same charger.
I've experienced this on four journeys now and tried unplugging and plugging at various points to confirm it definately seems to be happening.

Phone is a OnePlus 3T with the flat dash charger cable and Dash Charger 4A UK official charger.
(Before anyone says it, OnePlus products do carry the correct CE mark (not the China Export mark) and have the correct double insulated symbol and safety mark. I can't find the radio and em regulatory information but I'm assuming OnePlus products are FCC certified, which would make them fairly standard in em compliance.

Anybody else experienced this, or can add some evidence to back up or totally debunk this perhaps?
Even if it is the case, how would one go about proving there is a problem on-train and getting it fixed?
 
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dgl

Established Member
Joined
5 Oct 2014
Messages
2,412
I believe it's something to do with the way the power supply on the train reacts with the rfi suppression kit in the phone charger (either via an adapter or built into the socket). My laptop does this when connected to my Panasonic stereo if the grounded power lead is not connected.
 

hexagon789

Veteran Member
Joined
2 Sep 2016
Messages
15,790
Location
Glasgow
Hi all,
So I thought I was imagining things before, and to be fair this is still a very tenuous link:

When I'm charging my phone on a GWR Class 80x and the train is under electric traction and on the move, the screen on my phone behaves very oddly. Double presses, no presses, missed presses. As if the calibration or response of my phone screen is wayyyy off.
If I unplug from the charger, everything goes fine again.
If the train is in a diesel section, west of Bristol Parkway for example, and charging off the train socket, everything is fine. If the train is on electric traction but at a stand-still, everything is fine, only when on the move.
I've never seen anything like this charging off any other source with the same charger.
I've experienced this on four journeys now and tried unplugging and plugging at various points to confirm it definately seems to be happening.

Phone is a OnePlus 3T with the flat dash charger cable and Dash Charger 4A UK official charger.
(Before anyone says it, OnePlus products do carry the correct CE mark (not the China Export mark) and have the correct double insulated symbol and safety mark. I can't find the radio and em regulatory information but I'm assuming OnePlus products are FCC certified, which would make them fairly standard in em compliance.

Anybody else experienced this, or can add some evidence to back up or totally debunk this perhaps?
Even if it is the case, how would one go about proving there is a problem on-train and getting it fixed?

Been discussed in a few threads, on searching I can only find this one:
https://www.railforums.co.uk/threads/iphone-touchscreens-on-class-800-801.186680/

There was a more detailed explanation in another similar thread I'll try to find again.

It's a known issue with 80x trains
 

Mitchell Hurd

On Moderation
Joined
28 Oct 2017
Messages
1,647
I'm lost with this. I've never had a problem when I've charged my phone on the IET's and the LNER Class 80x so I guess I've been lucky.
 
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