Sony Xperia XZ2 Manual page 182

Handset radio waves may affect electronic medical equipment.
Power off handset near electronic devices or equipment operating on high precision control or
weak signals.
Handset radio waves may cause electronic malfunctions, etc.
* Take additional care near these devices: Hearing aids, implanted cardiac pacemakers, implanted
cardioverter defibrillators, other electronic medical equipment, and other automatically controlled
devices or equipment. For users of implanted cardiac pacemakers, implanted cardioverter
defibrillators, other electric medical equipment, check with the equipment vendor or distributor for
information about the effects of radio waves.
If Display or Camera lens is broken, do not touch the broken glass or exposed inside of
handset.
Touching the broken or exposed part may cause burns, injury, electric shock, etc.
If Internal Battery leaks or has an unusual smell, immediately stop using, and keep away from
fire.
The leaked fluid may catch on fire causing ignition, explosion, etc.
Do not allow a pet, etc. to bite handset.
Internal Battery may ignite, explode, overheat, or leak causing fire, burns, injury, etc.
When using the motion sensor, ensure the safety of the surroundings and hold handset firmly,
not swinging around more than necessary.
Failure to do so may cause accidents such as injury.
If Display is broken, do not allow the leaked internal substance to contact the skin of your face
or hands, or clothes.
May cause injury to eyes, skin, etc.
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