Verizon Names Data-Draining and Battery-Killing Apps

http://www.businessweek.com/articles/2013-02-11/verizon-names-data-plan-and-battery-killing-apps#r=rss

by ocean12 • 13 years ago

19 23 13 years ago

tadfisher5• 13 years ago

The actual list: http://support.verizonwireless.com/information/app_ranking/h...

It is interesting to note that 100% of the apps listed are games with wakelocks. While some may argue that this is necessary for games, I counter that your game should pause after a period of inactivity and allow the device to sleep. Just because your app is a console port does not mean it is running on a console.

Kudos to Verizon for naming and shaming.

masklinn3• 13 years ago

> It is interesting to note that 100% of the apps listed are games with wakelocks. While some may argue that this is necessary for games, I counter that your game should pause after a period of inactivity and allow the device to sleep.

Fucking meh. Seriously. They list a bunch of games which keep all the most power-consuming subsystems running full tilt (including radio for some), here's why they drain the battery: they're being used and doing their job.

Seriously, this list is idiotic, you've got complex games, you're playing them, it's going to drain the battery when you use them. Period. That's been pretty much a constant of my 6 or 7 years of using smartphones. Users using their phone will play, and when they don't play they'll quit the game or manually lock the phone.

Some of them do have issues ("Hill Climb Racing" seems to be a good example there, keeping radios running when in the background) but aside from this hint you have to hunt for the list is utterly worthless.

tadfisher5• 13 years ago

This isn't about the complexity of the game or how much battery it drains while playing. This is about you setting your tablet down for half an hour with the game paused, then coming back to find it has drained half your battery unnecessarily. Or you switch out to check your email, get distracted, and find that the running game has drained half your battery unnecessarily.

Android has an Activity lifecycle for a reason, and these games do not respect that. Users should not be worrying themselves with managing resources. If your game gets shoved out of the foreground, it should have the good graces to save its state and allow the device to sleep, like every other app on the system.

wiredfool2• 13 years ago

One of my friends does research on this for another of the big carriers, and has told me some war stories.

* No one caches, or they cache really badly. They've seen 20-30% reductions in battery usage from implementing a caching scheme from one version to the next. His theory is that they're coming from the web world, where caching is baked in.

* One app killed the battery by waking up the radios every 2 minutes to check for updated scores, sending a few bytes each time. Network traffic, in aggregate, was very small, but it just killed the batteries.

mikeash3• 13 years ago

That second one seems like an easy mistake to make. If you're thinking of ethernet or WiFi, then a few bytes every couple of minutes is no big deal. But on 3G, every time you activate the radio when it's not being used, it's a few seconds of fairly intensive setup, then your communication, then a few seconds before it times out to a lower-power state, then a few more seconds before it goes fully back to sleep. It'll be something like 10-20 seconds total, so your quick blip every 2 minutes ends up keeping the radio on a 10-15% duty cycle!

Scene_Cast2• 13 years ago

I've never done mobile dev. I get the problem, but what's the preferred alternative? For, say, email, sports scores, VOIP messages, stats dashboards, etc?

masklinn3• 13 years ago

> Network traffic, in aggregate, was very small, but it just killed the batteries.

And as most developers here would know, radios are an expensive piece to wake and won't go to sleep immediately, so doing more smaller network interactions is usually going to be much more expensive (power-wise) than doing fewer big ones (or using notification systems piggybacking on other stuff and bundling req/rep for all applications, e.g. what I hope GCM does)

hackmiester• 13 years ago

Impose Draconian data caps and try to con your users into leaving their unlimited data plans. Then, call apps out for using too much data.

Thanks, Verizon.

tadfisher5• 13 years ago

Is it not their prerogative to ensure a good quality of network service and user experience? These apps harm everyone who uses the service unnecessarily.

Is Google also being hypocritical by encouraging users to use networks for Search et al, at the same time encouraging developers to optimize for network usage and battery life? [1]

[1] http://developer.android.com/training/efficient-downloads/in...

mikeash3• 13 years ago

Huh? Your wording suggests that these two things are somehow contrary to each other, but in fact they're both perfectly aligned with the goal of reducing network utilization.

Hate on them if you want, but this isn't the least bit inconsistent.

ocean122• 13 years ago

I think they made at least one error: Need for Speed: Most Wanted was not developed by Rovio.

Also of interest is that none of the streaming radio services suffered in their rather proprietary ranking: http://support.verizonwireless.com/information/app_ranking/i...

tadfisher5• 13 years ago

It makes sense for a streaming radio app to acquire a wakelock, unless you want it to stop playing when the screen shuts off in 2 minutes. It does not make sense for any game to acquire a wakelock, and acquiring one is a sign that your app does not respect the Activity lifecycle and probably doesn't handle notifications or task switching well anyway. I know GTA3 absolutely sucks at this.

IvyMike• 13 years ago

I'm going to take this opportunity to complain about Google Navigation app, on every device I've owned.

Their directions really should say "ETA: 3 Hours from now. ETToBatteryDrained: 1.5 hours from now. Shoulda remembered your car charger, dumbass". 'Cause I do forget to pack it every goddamned time.

I don't know if this is really possible, but they really should have a "low-accuracy" mode, where if you're on a freeway with no turns for an hour, they should turn off the GPS, and just use inertial or cell-phone navigation mostly. Then only periodically check the GPS. If you are going to turn soon, or appear to have deviated, they can go back into active GPS mode, but the goal is to avoid wasting battery when you're probably just following the road.

ocean122• 13 years ago

Your post smacks of sarcasm, but you really should submit this idea to Google for consideration.

jpitz• 13 years ago

It is the nav app keeping the display lit up like a Times Square billboard that is sucking the majority of your battery life down, by the way. Your suggestion stands, however.

buzzkillr2• 13 years ago

You can lock the display and the voice directions still subsist. The battery drain is from the constant polling of GPS information in my experience though.

mynegation• 13 years ago

Keeping the charger and iPod cable in the car at all times was probably the most well spent money on electronics' side.

wlesieutre• 13 years ago

I don't own a car charging adapter, but on most trips where I'm using my phone for navigation I'll also have a laptop and charger cable in the car.

For Apple laptops, if you start charging while the computer is awake it will keep charging when the laptop is sleeping. For PCs it varies by manufacturer, but IIRC some of them have a BIOS/UEFI option for powering USB ports while they're asleep.

Verizon Names Data-Draining and Battery-Killing Apps

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