02-09-2015 03:46 PM
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  1. Lundon44's Avatar
    While battery life for me has been decent at best, I've always been confused by those who have boasted about exceptional battery life. Just for clarification I'm using the unlocked RM-937 Lumia 1520 (Hong Kong variant) on the Rogers network in Toronto, Canada. For me, battery has been marginally better than my 920. This led to do some testing and troubleshooting and I've spent the last 5 days trying to eliminate some possibilities. So far, on average I'm seeing a drop of anywhere between 5-10% in battery drop per hour while in my pocket (not using my 1520). My personal settings and discussion can be found on my previous thread: http://forums.windowscentral.com/nok...ml#post2263536

    So I made a breakthrough...

    Last night I went to see The Hobbit and with my phone in my pocket not being touched I dropped 14%! Last night I went to bed with my battery at 62%. I accidentally left my phone off the charger. I woke up this morning pissed expecting my battery to be on battery saver but through some miracle of God it did NOT move a single percentage. Don't ask me how this was possible but the only way I can make sense of it was that I was connected to Wi-fi at home. I only received one email over night and a couple live tiles updated. This led me to immediately believe that the reason I'm not seeing stellar battery life (though it is still very good) is because of LTE.

    So I did a second test. Normally on my short trek to work or home from work I drop about 7% just on my 20-30 min walk without use. This baffles me. Today I manually dropped the connection down from max speed of 4G aka LTE to 3G. I made my trip to work this morning, took it out of my pocket to check the battery and guess what? It did not move a single percent! So in conclusion, my battery eating culprit is LTE.

    Now.. I'm not sure if this is only going to cause Canadians who purchased unlocked 1520's issues because Rogers actually operates on the 2600mhz LTE Max band which supposedly can deliver us LTE "speeds of up to 150mbps". And to my understanding AT&T users with unlocked 1520's do not get LTE on these devices. So it seems like this LTE band is causing some battery drain. Sadly, the only solution is to manually adjust my data connection speeds based on use but that's pretty annoying. And I doubt a fix for this is going to address this issue. That's too bad.

    EDIT: Someone on another forum just mentioned something someone else here said. And this is exactly what the issue is... When you have low receive signal strength your phone transmits at a higher power to make sure it gets a signal back to the tower. Since Canadians are only able to achieve partial LTE coverage due to only having the 2600mhz band on my phone for LTW and not the AWS (1700/2100Mhz) band it seems to make sense my phone drains when using LTE. You guys in the US won't encounter this issue. But some people using the unlocked model like myself will have this issue.
    wp_ss_20131220_0001.jpg
    Last edited by Lundon44; 12-20-2013 at 03:16 PM.
    Kebero and HeyCori like this.
    12-20-2013 09:55 AM
  2. DennisvdG's Avatar
    I thought it was generally known that LTE rapes your battery...
    12-20-2013 09:59 AM
  3. unstoppablekem's Avatar
    I thought it was generally known that LTE rapes your battery...
    Yeah, he just wanted to prove it.
    12-20-2013 10:06 AM
  4. Lundon44's Avatar
    Yeah, he just wanted to prove it.
    Correct. I've had people tossing around a million suggestions on how to resolve this battery drain. All types of suggestions like performing a hard reset, swapping the device, disabling background tasks, turning down my screen brightness, install apps one at time to test the battery... Only one person suggested that it could be LTE.

    So yes, I'm essentially confirming for anyone unsure or getting/giving mixed info that LTE is a 100% definite battery killer.
    unstoppablekem likes this.
    12-20-2013 10:13 AM
  5. gfunk84's Avatar
    I thought it was generally known that LTE rapes your battery...
    I thought one of the benefits of LTE was better battery life than 3G? I don't even bother with Wi-Fi on my 1020 even when I'm at home.

    OP are you in an area with spotty service? That will drain battery far quicker than a reliable connection.
    12-20-2013 10:49 AM
  6. Meagey's Avatar
    On mine I can pic lte 4g or 2g... I've had it on lte since I got the phone...ill try to put in on just 4g and see of that saves some battery for me
    12-20-2013 11:04 AM
  7. TenTwelve's Avatar
    So yes, I'm essentially confirming for anyone unsure or getting/giving mixed info that LTE is a 100% definite battery killer.
    Funny, LTE does not kill off my battery. Like I mentioned prior. I have all settings identical to my 920 and the 1520 is worlds better in terms of battery life.
    palandri likes this.
    12-20-2013 11:05 AM
  8. Idzaudin Idz's Avatar
    Maybe there is low LTE coverage. The phone will constantly searching for LTE connection. It will consume much battery
    12-20-2013 11:08 AM
  9. TenTwelve's Avatar
    Maybe there is low LTE coverage. The phone will constantly searching for LTE connection. It will consume much battery
    That is probably the most likely scenario.
    palandri likes this.
    12-20-2013 11:10 AM
  10. radmanvr's Avatar
    I couldn't help but notice that your usernam is Lundon so I assume thats like London and I read battery as (bat tree)
    12-20-2013 11:13 AM
  11. Phrozty's Avatar
    I've never taken LTE off of mine and was getting 2 days out of it (before I started playing Qonqr lol)
    12-20-2013 11:54 AM
  12. SoloXCRacer's Avatar
    Yeah, I have pretty strong LTE coverage in my city and have had stellar battery life.
    palandri likes this.
    12-20-2013 12:14 PM
  13. Citizen X's Avatar
    I thought it was generally known that LTE rapes your battery...
    Fundy Christians don't get sex ed at school so they don't know.

    I thought one of the benefits of LTE was better battery life than 3G?
    Yes and babies are delivered by storks.

    Maybe there is low LTE coverage. The phone will constantly searching for LTE connection. It will consume much battery
    ^This.

    I saw some video of a guy on a train checking out Britain's cell phone infrastructure and he noticed abysmal battery life as he traversed the country and his phone kept popping into low coverage areas. I put my phone in airplane mode at certain ski resorts because they have crap coverage on their mountains. I turn on the radios every so often to check for texts and what not. I do this as well when driving through the American desert southwest where coverage can be spotty.
    palandri and Jf.Vigor like this.
    12-20-2013 12:21 PM
  14. Jf.Vigor's Avatar
    I saw some video of a guy on a train checking out Britain's cell phone infrastructure and he noticed abysmal battery life as he traversed the country and his phone kept popping into low coverage areas. I put my phone in airplane mode at certain ski resorts because they have crap coverage on their mountains. I turn on the radios every so often to check for texts and what not. I do this as well when driving through the American desert southwest where coverage can be spotty.
    Yup, what this guy said. It's all about your coverage area. I confirmed this about a year ago while sitting at work. I ran a little test and used wifi only. My 920 lasted like a champ
    palandri and giantenemybird like this.
    12-20-2013 12:45 PM
  15. Matts4313's Avatar
    Glad you found a fix. Ive only had mine for a couple days, but I am in the "battery is awesome" camp. I wanted to test it out, so after getting it fully charged the first time I decided not to plug it in until it gave me a warning. It was about 36 hours later, and that was with a lot of playing/showing it off.
    12-20-2013 01:02 PM
  16. Lundon44's Avatar
    Someone on another forum just mentioned something someone said above. And this is exactly what the issue is... When you have low receive signal strength your phone transmits at a higher power to make sure it gets a signal back to the tower. Since Canadians are only able to achieve partial LTE coverage due to only having the 2600mhz band on my phone for LTW and not the AWS (1700/2100Mhz) band it seems to make sense my phone drains when using LTE. You guys in the US won't encounter this issue. But some people using the unlocked model like myself will have this issue.
    12-20-2013 01:24 PM
  17. jaj324's Avatar
    AT&T has a strong LTE network in my city and it hasn't been a battery killer at all for me. I was using a Samsung GSII Skyrocket when they flipped the LTE switch and if anything my battery life got better, not worse.

    Nokia 1520
    Last edited by jaj324; 12-20-2013 at 03:02 PM.
    12-20-2013 01:33 PM
  18. Lundon44's Avatar
    AT&T has a strong LTE network in my city and it hasn't been battery killer at all for me. I was using a Samsung GSII Skyrocket when they flipped the LTE switch and if anything my battery life got better, not worse.

    Nokia 1520
    As you said you have a strong LTE signal which is exactly why you don't suffer any battery loss. If you had a weak LTE signal you might see issues.
    geekaren likes this.
    12-20-2013 01:44 PM
  19. barbequtioner's Avatar
    This is one of those threads that will illicit unnecessary fear in us city dwellers. I'm so happy to be in the heart of an LTE swarm, I don't know how you closer to rural types deal with these telecom atrocities.
    TenTwelve likes this.
    12-20-2013 01:50 PM
  20. Matts4313's Avatar
    Since Canadians are only able to achieve partial LTE coverage due to only having the 2600mhz band on my phone for LTW and not the AWS (1700/2100Mhz) band it seems to make sense my phone drains when using LTE. You guys in the US won't encounter this issue. But some people using the unlocked model like myself will have this issue.

    So what you are saying is... we should blame Canada?

    (southpark reference )
    Lundon44 likes this.
    12-20-2013 01:57 PM
  21. jaj324's Avatar
    It's the fat mayor's fault...

    Nokia 1520
    12-20-2013 02:01 PM
  22. Lundon44's Avatar
    It's the fat mayor's fault...

    Nokia 1520
    Lol.. That wouldn't surprise me..
    12-20-2013 02:06 PM
  23. jaj324's Avatar
    As you said you have a strong LTE signal which is exactly why you don't suffer any battery loss. If you had a weak LTE signal you might see issues.
    Right, so the point is that it's not LTE that is the battery killer, it's a weak signal that is the battery killer. We've always known that a weak signal whether it was GSM, EDGE, 3G, etc was a battery killer since the phone is constantly trying to connect to the network. It's the same with LTE. To say that LTE is a battery killer is not accurate.
    geekaren likes this.
    12-20-2013 03:06 PM
  24. barbequtioner's Avatar
    It's the fat mayor's fault...

    Nokia 1520
    Are you saying Rob Ford doesnt get enough LTE to eat at home? :D
    Lundon44 likes this.
    12-20-2013 04:21 PM
  25. manicottiK's Avatar
    ...it's not LTE that is the battery killer, it's a weak signal that is the battery killer.
    It might be a third (although related) thing: maybe using a "non-local" LTE phone is a problem. If that's the case, it would mean that people would have a battery problem is they use an RM-937--which has LTE for Europe, Asia, and Oceania--while being in North America or use an RM-940--which has LTE only for North America--while outside of N.A. Those conditions might make the phone "think" that it has bad signal all of the time.

    If that's the case, it might be worth imploring AT&T to allow users to disable LTE so that they can extend battery life while traveling abroad.
    jaj324 likes this.
    12-20-2013 04:31 PM
47 12

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