The vibrate strength of my Galaxy Nexus is incredibly weak. When I have the phone in my pocket I simply don’t feel the vibrate for incoming calls at all, which defeats its purpose. I’ve missed more than one important phone call due to that.
Is there a way to increase the strength? I haven’t found anything relevant in the settings.
Answer
AFAIK, the vibrator motor that are used in the phones are called Q-Coin motor as they are in a shape of a coin. They are of permanent magnet type accepting two leads for positive and negative DC voltages. The circuitry that operate this motor just can switch on the motor for a specific period of time and can change its rotation direction. All other parameters of vibration are set by motor's design.
Hence, for your need the amplitude of the vibrator motor has to be increased to make you aware. And unless the motor itself is replaced, this can't be done in my opinion.
This is a specification of such a motor and you can see it's details.
UPDATE: After searching Google, I stumbled on more info about these motors. With that information, it seems that there are two types of such motors. One being fitted with an eccentric rotating mass and another being a linear actuator (working more like a speaker). The article about linear actuator says that this is the present trend and beautifully explains how the motor works.
If the Nexus device that is in question is vibrating at its maximum amplitude, then there is no way any software component to increase its amplitude. Other way, if device is NOT vibrating at its maximum, then by increasing the applied voltage there is a possibility to increase the amplitude.
Thanks to @Konrad Rudolph who made me to know more about this motor.
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