Zte V72M Quick User Manual page 17

Pacemakers
Pacemaker manufacturers recommend that a minimum separation
of 15 cm be maintained between a mobile tablet and a pacemaker
to avoid potential interference with the pacemaker. To achieve this,
use the tablet on the opposite ear to your pacemaker and do not
carry it in a breast pocket.
Hearing Aids
People with hearing aids or other cochlear implants may
experience interfering noises when using wireless devices or when
one is nearby.
The level of interference will depend on the type of hearing device
and the distance from the interference source. Increasing the
separation between them may reduce the interference. You may
also consult your hearing aid manufacturer to discuss alternatives.
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