So how does the phone respond to a press of the “power on” button without keeping some electronics activated to monitor the status of the button?
Typically, the button is monitored by a very low-power circuit that detects the power-on signal, and then sequences the rest of the phone circuitry. So, strictly speaking, part of the phone is always “on”, but it’s not a part that does anything significant.
DOH! :smack::smack::smack: I knew I should have read the manual.
beowulff, the phone is neither transmitting or receiving in this state, correct?
Correct.
An iPhone can stay power-off for many months, and still turn on. There’s no way that this would be possible if the radio was active.
Got it. Thanks.
Airplane mode should do what you need and is easier / faster then the powerdown/up sequence.
You can verify that your phone is totally silent by going to the Apple ‘find my iPhone’ desktop app and see if it can find it.
Also a side note about the power usage. While it is true that the phone will vary the power output, using just enough to reach the cell tower, the most power is used when the phone is just short of communications with the tower, causing it to ‘shout’ as loud as it can and do other tricks to get heard - like shout to other towers. But if there is no signal at all the phone is ‘listening’ but not transmitting. So it would depend on how well those cages work, if well enough that it is silent in there I would not expect such a drain on battery life, but if it was able to detect the signal it might drain the battery fast.
How about a small biscuit tin or a tobacco tin?
I’m pretty sure the antenna gain is still cranked right up, even if that is true .
I like the comments and would recommend this product.
I think it would just be cheaper to just turn the sucker off.