Lenovo tab pro 11

[salmonella]

For Lenovo's xiaoxin pad pro (2021), is there a feature that allows different members of the family to login with their own apps/fingerprint/apps?

 

[RadEoNic]

Sorry to revive a old thread

just want to ask if anyone has any issue with ghost touches when using the tablet plugged to the charger?

I had this issue but it seems to have gotten worse recently. I think it’s a grounding issue.
anyone knows where I can get it fixed for cheap?

 

[Mizuki756]

Sorry to revive a old thread

just want to ask if anyone has any issue with ghost touches when using the tablet plugged to the charger?

I had this issue but it seems to have gotten worse recently. I think it’s a grounding issue.
anyone knows where I can get it fixed for cheap?

I think it cannot be fixed and it's not advisable to use any such electronic devices directly plugged into a power socket. I have this issue on my Lenovo pad pro 12.6 also.

Try using it plugged to a power bank instead. The ghost touch issue do not exist when plugged in a power bank and it's safer.

 

[RadEoNic]

I think it cannot be fixed and it's not advisable to use any such electronic devices directly plugged into a power socket. I have this issue on my Lenovo pad pro 12.6 also.

Try using it plugged to a power bank instead. The ghost touch issue do not exist when plugged in a power bank and it's safer.

So it’s a grounding issue on the tablet?

 

[Mizuki756]

So it’s a grounding issue on the tablet?

Probably.

 

[hkchew03]

Sorry to revive a old thread

just want to ask if anyone has any issue with ghost touches when using the tablet plugged to the charger?

I had this issue but it seems to have gotten worse recently. I think it’s a grounding issue.
anyone knows where I can get it fixed for cheap?

Change charger and cable? Some cheap charger/cable combo has this issue.

 

[Mizuki756]

Change charger and cable? Some cheap charger/cable combo has this issue.

I think it has to do with Lenovo tablets. Same charger and cable but it doesn't happen for Xiaomi and apple tablets I owned. But the Lenovo tablets, even the previous one I owned, has this ghost touch issue during use when it's directly connected via charger. But connected to powerbank it's ok.

Not a big thing though since we really shouldn't be using these mobile devices while directly connected to a power socket for safety.

 

[hkchew03]

I think it has to do with Lenovo tablets. Same charger and cable but it doesn't happen for Xiaomi and apple tablets I owned. But the Lenovo tablets, even the previous one I owned, has this ghost touch issue during use when it's directly connected via charger. But connected to powerbank it's ok.

Not a big thing though since we really shouldn't be using these mobile devices while directly connected to a power socket for safety.

Using mobile devices while charging from socket is not a safety issues, devices/charger/socket itself should be built safe enough to be used while operating. Its like saying we can't use laptop that is plugged in.

 

[Mizuki756]

Using mobile devices while charging from socket is not a safety issues, devices/charger/socket itself should be built safe enough to be used while operating. Its like saying we can't use laptop that is plugged in.

Well, it's really up to u guys. There are several news overseas which disastrous accidents happens while the user is using mobile devices while charging. It hasn't happen in Singapore yet but I certainly won't want to be the first.

Laptops are different as we are not 'touching' the screen or using it at close proximity.

 

[RadEoNic]

Change charger and cable? Some cheap charger/cable combo has this issue.

I think it has to do with Lenovo tablets. Same charger and cable but it doesn't happen for Xiaomi and apple tablets I owned. But the Lenovo tablets, even the previous one I owned, has this ghost touch issue during use when it's directly connected via charger. But connected to powerbank it's ok.

Not a big thing though since we really shouldn't be using these mobile devices while directly connected to a power socket for safety.

Cheap and expensive also same for me
I got an anker power brick with 6 ports also same
Those cheapo wall wart also

 

[Mizuki756]

Cheap and expensive also same for me
I got an anker power brick with 6 ports also same
Those cheapo wall wart also

It's definitely the Lenovo tablets. Just use it with power bank and problem solved. My Lenovo tablet after more than 2 years of 'abuse' also have very low battery health already. Using it with power bank while turning on battery protection mode should help extend it's remaining life.

 

[salmonella]

I've found my tablet to have a charged/static feel (?) while charging. But not ghost taps so far.

In theory, the charger or power bank negotiates a specific charge parameters on one of the mutually supported charge protocols. So both charger or powerbank should be able to cause the issue if they negotiate the same settings. Just that if safety mechanisms fail, the charger can have catastrophic outcome, while the powerbank should have slightly less catastrophic outcome.

 

[Mizuki756]

I've found my tablet to have a charged/static feel (?) while charging. But not ghost taps so far.

In theory, the charger or power bank negotiates a specific charge parameters on one of the mutually supported charge protocols. So both charger or powerbank should be able to cause the issue if they negotiate the same settings. Just that if safety mechanisms fail, the charger can have catastrophic outcome, while the powerbank should have slightly less catastrophic outcome.

That's probably why many people advise to stick to the original chargers. The safety mechanism and charge parameters are more compatible with the devices they shipped with. Original charger doesn't seem to have these issues.

For powerbanks, as long as we don't use those no brand china made ones, it's safe as long as it's not bloated.

 

[hkchew03]

I've found my tablet to have a charged/static feel (?) while charging. But not ghost taps so far.

In theory, the charger or power bank negotiates a specific charge parameters on one of the mutually supported charge protocols. So both charger or powerbank should be able to cause the issue if they negotiate the same settings. Just that if safety mechanisms fail, the charger can have catastrophic outcome, while the powerbank should have slightly less catastrophic outcome.

The handshake determine the charge voltage and current. For the leak it is likely due to poor design of the PCB or USB port. But what surprising is Lenovo being a huge company making millions of devices has not gotten it right.

 

[Mizuki756]

The handshake determine the charge voltage and current. For the leak it is likely due to poor design of the PCB or USB port. But what surprising is Lenovo being a huge company making millions of devices has not gotten it right.

I guess no matter how technology had advanced, there are sometimes lapse.

Somehow, for my case, it seems only the OLED/AMOLED Lenovo tablet models have this issue. The LCD ones don't have and can be used normally even when plugged into a 3rd party charger/cable.

 

[Tony.Manero]

I wonder any more updates for this tablet or is it stuck at android 13

 

[Teo Ming Ern]

Sorry to revive a old thread

just want to ask if anyone has any issue with ghost touches when using the tablet plugged to the charger?

I had this issue but it seems to have gotten worse recently. I think it’s a grounding issue.
anyone knows where I can get it fixed for cheap?

It's a China tablet unique problem... some insulation might have worn out inside... won't know what until you opened it and not sure can clearly identify the issue...

 

[Teo Ming Ern]

In relation to the ghost touch, and electricity leakage when charging, it's a problem unique to China tablets made for China...

1. Our electrical systems call for an earth line to the wall socket, hence there is double protection with the charger and device properly insulated + grounded and with the device plugged, any deficiency so the device insulation is mitigated by the earth pin in the charger...

2. China tablets, those grey imports that come with just 2 pins - the earth is missing. If the device's internal insulation is badly done, using the device plugged will cause ghost touches or leakages in the form of a zap your fingers feel. With the original 2-pin charger, the same issue persists but since the quality is better (ie thicker plastics to prevent high voltage jumping across insulation panels) this issue isn't seen... but with age, deterioration occurs...

3. Buying third party chargers which are good quality may or may not mitigate this problem completely cos the internal design may depend entirely on the earth line to ground the device but if the device insulation isn't well done, you may still get ghost touches or leakages...

That's why I gave up on these China tablets early on in the tablet era around 2014 period... I always got zapped...

The current major China tablet brands like Chuwi, Alldocube and Teclast are better built than before but their QC is questionable... as for Lenovo, their internal quality is different from those for international market.... that's why these China Lenovo tablets are substantially cheaper, not to mentioned that licenses are cheaper for the OS due to China's restrictions as to what kind of apps can be used...

 

[Teo Ming Ern]

I wonder any more updates for this tablet or is it stuck at android 13

Lenovo doesn't bother to update their China tablets... their international models only get 1 update for OS version. So can stop holding your breath for an update...

 

[RadEoNic]

In relation to the ghost touch, and electricity leakage when charging, it's a problem unique to China tablets made for China...

1. Our electrical systems call for an earth line to the wall socket, hence there is double protection with the charger and device properly insulated + grounded and with the device plugged, any deficiency so the device insulation is mitigated by the earth pin in the charger...

2. China tablets, those grey imports that come with just 2 pins - the earth is missing. If the device's internal insulation is badly done, using the device plugged will cause ghost touches or leakages in the form of a zap your fingers feel. With the original 2-pin charger, the same issue persists but since the quality is better (ie thicker plastics to prevent high voltage jumping across insulation panels) this issue isn't seen... but with age, deterioration occurs...

3. Buying third party chargers which are good quality may or may not mitigate this problem completely cos the internal design may depend entirely on the earth line to ground the device but if the device insulation isn't well done, you may still get ghost touches or leakages...

That's why I gave up on these China tablets early on in the tablet era around 2014 period... I always got zapped...

The current major China tablet brands like Chuwi, Alldocube and Teclast are better built than before but their QC is questionable... as for Lenovo, their internal quality is different from those for international market.... that's why these China Lenovo tablets are substantially cheaper, not to mentioned that licenses are cheaper for the OS due to China's restrictions as to what kind of apps can be used...

I’m using an anker 6 port charger.
the ghost touch still exists
Hope it’s enough to mitigate any fire risks
Or I’ll just avoid charging at night totally