I've got some tags and thought I'd use them more than I do too.
One is on the back of the ipad, and switches on tethering for it. Another is in the car, switches on Bluetooth, and messages my wife to saying on the way home.

What if you're not going home? Do you have a seperate one for the way to work?

I reckon wifi drains ~30-50% on my nexus 7. When I keep it turned off (except when I actually want to use it), it doesn't kill the battery in < a day.

My new (first ever) wifi router was secure* (albeit with stock pw, which I immediately changed) outta da box.



*does not apply to NSA spookdom

They used to ship them wide open, I'm glad they changed that.  Although a local ISP still ships some with WEP.  I can crack wep is about 10 seconds!

When you reckon that are you checking the battery stats? It'll tell you with some precision. Bit odd for wifi to kill a tablet battery in one day though, it's never occurred to me to turn my iPad wifi off.

Definitely sommat weird happening there, I leave wifi permanently on on my n7 and it'll go for ... well, I don't know cos I use it a fair bit, but leaving it on (it'll go to sleep of course) for a day doing nothing doesn't even drain 1% of the battery.

Stats show display using 95%, but not what's used when display is off.

well... that's just everything else in that list, surely? Which are likely used when display is on or off. The display is using 95% of your battery, as in the screen being on is the main power draw. Which sounds much more likely. It's a lot of pixels to push. 

I'm thinking now it may be silent updates that's doing it. I left the WiFi on all day at work (as usual) and didn't plug in the USB (unusual) and it only drained ~7% or so including an hour surfing before work, and half hour of eBook reading on the subway (Mountains of Madness) after a full charge last night.

That sounds more like it. Although I don't know how many silent updates actually happen unless you've deliberately set them to, I find most default to manual. Still - maybe you had a rogue app suck up the juice? That definitely happens.

Mountains of Madness I have only read in comic form so far. Apparently Del Toro really really wants to make a film of it but the Man won't give him budget.

On whatever's on the N7 they all update automatically as far as I can tell. Maybe cos it's a tablet and not a phone, so it's assuming wifi?

oh, could be I guess? Man, that could annoy some people if so.

I assume there's a setting for it. In fact I vaguely remember seeing one. But yeah my tablet was on sleep or standby or whatever it's called with these things yesterday and this was the result.

Well it's an awesome read. If Del Toro managed to not turn it into a Transformers remake it could make a good flick too. Though the territory's been well covered by eg Carpenter's The Thing, and more recently Prometheus.

I much prefer auto updating. Fuck doing it myself.

I messed with the screen dpi on my Nexus 4 a while back and set it to a non standard value which the play store didn't like. That meant nothing updating. When I fixed the dpi issue I had to go and manually update about 50 apps, much prefer my phone do it when it wants to, though that does seem to be at fairly random intervals.

Surely you didn't have to manually update all of them? You just say 'update all'? Only time it wants manual ones per app is if they change permissions, which I assume would also prevent an auto update.

Not all of them but quite a few. It had been so long (a couple of months I think) that many apps had permissions changes.