Double Tap vs Raise vs Wave vs Voice: exploring alternative ways to wake up a phone

Double Tap vs Raise vs Wave vs Voice: exploring alternative ways to wake up a phone
In the past few years, some smartphone manufacturers have started placing the standby/power button and the fingerprint sensors in various places on modern smartphones. Sometimes, this alternative placement makes the buttons harder to reach if you just want to take a peek at your lock screen to view your notifications or check the time. In turn, a new problem has arisen: how do you wake up a phone without touching any buttons?

What is now an issue that’s limited to only a few smartphone models may turn out to be a real problem as smartphone makers get increasingly closer to launching all-screen phones, handsets that integrate home buttons and fingerprint sensors in the display itself. As it turns out, device manufacturers have already come up with several solutions for allowing users to wake up their phones without pressing any button (and performing some odd finger gymnastics to achieve this goal).

Among them, the most popular are Double Tap To Wake, Camera Wave, Raise To Wake, and Voice Commands. While the names of these features may vary between implementations, the principle behind them remains consistent. Today, we're here to discuss what these features mean, how they are accomplished, and try to uncover the advantages of disadvantages of each one.

Before heading on any further, it should be noted that, if you have a lockscreen password or pattern lock, these features will wake the phone to the corresponding security login screen. If not, you'll be taken straight to the previous screen, which is either the app that you had open before locking the device or the home screen itself.

Double Tap



If you're rocking an LG, Sony, or HTC flagship smartphone, then you already know what Double Tap To Wake is and how it works. LG calls this feature Knock On, HTC integrates it in its Motion Launch system, while Sony has the feature listed under Ease Of Use. Regardless of its name, however, the feature allows users to wake up their phones through a simple double tap on the display. 

To achieve this task, the phone's digitizer is constantly monitoring user input. When two taps occur in quick succession in roughly the same place on the screen, the system wakes up the device.

The main advantage of this feature compared to alternatives is ease of use: double tapping the screen to wake the phone seems natural, especially if you're a Windows user who is used to double clicking. 

On most smartphones which support double-tap, you can also double tap the home screen to have the phone enter sleep mode. This means that you can both unlock and lock your phone using the system. Sadly, some smartphones can only be woken up using double tap. 

Convenient and intuitive as this method may be, accidental triggering may happen when users keep their phones in the pocket. This usually happens when the display touch sensitivity is too high, as was the case with the Sony Xperia Z5.

If a lockscreen password or pattern is set up, then the damage is minimal. In the absence of a login system, however, your phone may end up sending illegible messages to your boss or call your parents during the oddest of conversations.


Raise To Wake – Ambient Display


With stock Android Lollipop, Google introduced a new feature called Ambient Display. In principle, the gyroscope and accelerometer detect that you’ve picked up the phone and wake the phone up to reveal your notifications. With the new iOS 10, Apple’s has introduced a similar feature called Raise To Wake.

These systems may have fancy names, but their implementation is fairly simple: users just need to raise their phone to have it wake up. From what we’ve experienced, this feature works fairly accurate, as there is little chance of accidental triggering because users rarely raise their phones without trying to activate it.

Overall, this currently seems to be the best way of waking the phone up without touching any button, although the feature doesn’t work when the phone is lying on the table. Furthermore, Ambient Display can lower the standby battery life of Android phones by up to 20%, which is quite a lot. 

Wave To Wake



Wave To Wake is a decent alternative to waking your phone without picking it up. In fact, with this method, users don't even need to touch their smartphones. Instead, users only need to wave at the proximity sensor, which is usually located above the display near the front-facing camera.

There are times when your hands are too dirty to touch your phone but still need to wake up the device (to check the time, for instance), which is where this alternative wake-up feature proves its utility.

Samsung has first introduced this feature on the Galaxy S5, but devices such as the Galaxy Note 4, the Galaxy S6 series, the Galaxy Note 5, and the Galaxy S7 series have received it as well in the meantime. Whether it’s called Air Wake Up or Gesture Wake, the feature had the same functionality on all of Samsung’s devices.

In more technical terms, the software is constantly monitoring data coming from the proximity sensor, and will wake up the phone when it detects that your hand is close to the screen. Furthermore, the best of these systems also pull data from the gyroscope, meaning that they won’t activate the device if it’s not sitting it isn’t laying on a flat surface.

OK Google / Voice Commands



Last but not least, we should also mention that some devices can be woken up through voice. Yes, we're talking about the famous OK Google voice command. On most Android phones, you can invoke Google Now’s voice search from any screen following the corresponding setup procedure. On a limited number of devices, the OK Google command also works when the screen is off. 

This feature was first introduced with the original Motorola Moto X, but has since been made available to devices such as the Nexus 9, the Nexus 5, and the Samsung Galaxy Note 4. Unfortunately, no current-generation device supports voice activation when the screen is off.

The major problem with the voice-enabled wake up is battery drain. To be able to interpret your commands when the screen is off, the device needs to be constantly monitoring the input from its microphone. This requires much more resources compared to double taps and camera waves.
 
On the original Moto X, Motorola fitted in a custom SoC that included a separate chip designed to monitor and process microphone input without waking up the main processor. Unfortunately, however, the resources that go into such an endeavor are not validated by the result. 

Poll


Now that we’ve briefly summarized the alternative ways of waking up a smartphone, we turn to you, our readers, to provide some feedback. 

Which is your favorite method of waking up a phone without touching a physical button? Express your opinion by voting in the poll below, but also make sure to drop us a comment if your thoughts cannot be fully expressed by a single choice poll answer.

Double Tap vs Raise vs Wave vs Voice: Which Is Your Favorite?

Double Tap
63.6%
Wave
8.9%
Ambient Display / Raise To Wake
23.05%
OK Google / Voice Commands
4.45%

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25 Comments

1. Harambe unregistered

Tap on Fingerprint scanner is the best.

3. Plasticsh1t

Posts: 3109; Member since: Sep 01, 2014

This. I rest my finger on the finger print scanner of my HTC 10 to check my notifications. Pretty convenient.

6. Bankz

Posts: 2550; Member since: Apr 08, 2016

Well, you're right but I believe what the article is trying to talk about is primarily about notification.. And to that regard, raise to wake is the best imo.

24. ibend

Posts: 6747; Member since: Sep 30, 2014

if its all about notification, I choose always-on-screen..

13. michaelny2001

Posts: 346; Member since: Aug 01, 2012

absolutely. Neither choice. Fingerprint is the best option.

2. cncrim

Posts: 1590; Member since: Aug 15, 2011

Double tap all the way.

4. Babadook

Posts: 230; Member since: May 24, 2016

I like no having to touch the phone itself, so wave is my favorite (which I use on my Moto X 2014)

20. marorun

Posts: 5029; Member since: Mar 30, 2015

Yeah Motorola been having this on moto phone since even before google buyed them. so google did not introduce this methode moto did..

5. bucky

Posts: 3795; Member since: Sep 30, 2009

Double tap wins over raise to wake? Why? Genuinely curious.

9. buccob

Posts: 2980; Member since: Jun 19, 2012

In my case I work in an office and most of that time, my phone is on the table of my desk, so Double Tap is way more convenient than raising to wake every time... Additionally I also have a car stereo which is also a Dock for my phone, so again, the device is fixed to the dashboard and the power button is hidden by the frame of the mount. The best way to wake it is again double tap, however I set it up so it remains unlocked with that stereo, so I don't have to do additional input. In the end it will all depends on the user and his/her own routine and case of use. For me double tap works great, and I haven't had any false wake in my pocket since the Marshmallows update.

16. submar

Posts: 713; Member since: Sep 19, 2014

For me a lazy person, I would be too lazy to pick up/move the phone. So double tap is better.

7. Bankz

Posts: 2550; Member since: Apr 08, 2016

Although in all I think Moto display is miles better than every other primarily because of its breathing notification and because the display doesn't need to be always on except when you its needed (by picking it up or waving your hands on it). Infact the Moto display has 4 dedicated infrared sensors for that purpose alone. Its no contest here.

8. Bankz

Posts: 2550; Member since: Apr 08, 2016

*when its needed.

10. mahima

Posts: 743; Member since: Nov 20, 2014

double tap to wake for me... Nokia is really something when it comes to phone...

11. mahima

Posts: 743; Member since: Nov 20, 2014

and right now i used moto raised to wake..which is also not bad...but if double tap to wke is there, i will definitely used it instead of raise to wake

12. libra89

Posts: 2316; Member since: Apr 15, 2016

Double tap, aside from fingerprint.

15. SIGPRO

Posts: 2817; Member since: Oct 03, 2012

Double tap all the way! First phone with the double tap feature was the Nokia N9!

17. keithlum

Posts: 18; Member since: Jul 23, 2015

Thank you Nokia

18. CreeDiddy

Posts: 2276; Member since: Nov 04, 2011

I prefer raise to wake...

19. monoke

Posts: 1197; Member since: Mar 14, 2015

Double tap's just intuitive. The others are gimmicky. Waving ur hand? U kidding me? People will think ur trying make ur phone dissappear or something.

25. Philipand96

Posts: 103; Member since: Jul 12, 2014

Windows phone have "TWO" first change settings to ON [activate] "GLANCE" And after your phone times out & screen lock the screen is totally blank Any change in the light picked up by camera sensor you get in my case "current time"(other setting are DATE/ DETAILED STATUS/ QUICK STATUS Eg taken out of pocket (dark) to light current time displayed With no change in light you pass you hand "wave" over light sensor to prompt change which i think is now the proximity sensor? as it has to be close To bring up lock screen double tap On BB 10 OS slide finger up the screen, this then brings up lock screen. again like Microsoft screen totally dark BTW both phone do NOT have fingerprint scanner Blackberrys slide to wake definitely preceded Microsoft double tap so 2013

21. PHYCLOPSH

Posts: 654; Member since: Jun 28, 2014

The author of this article is absolutely wrong in saying no current-generation device supports voice activation when the screen is off. I've got it enabled on my LG G5 and it works perfectly while the screen is off and the phone locked. It doesn't use much battery (much less so than AOD) and It's very handy when you need to operate the device with no hands.

22. Babert

Posts: 165; Member since: May 08, 2013

waking up with placing your finger on fingerprint scanner without need for turning the phone n is the best way to authenticate and access the phone!

23. TrackPhoneUser

Posts: 256; Member since: Oct 21, 2015

Moto Display is best.

* Some comments have been hidden, because they don't meet the discussions rules.

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