Battery usage was good when lollipop was running even it was good when I got 1st Marshmallow update month ago.
My S6 Duos updated to Marshmallow there is 2 major problem I am suffering of.
1. For Text Messages pre selected sim card instead of always ask. Its really horrible.
2. After the last update of Marshmallow about 10 days ago battery is draining so quickly, I am surprised to see that Android system is using 61% of the battery. What the hell is this...??????
I can't upgrade the OS to marschmallow, which is very bad, please work on that for us, since single sim can be upgraded to marschmallow, dual sim should be able to do same.
After android 6 marschmallow updated not seen which sim card is ringing. It's so frustrating.. need some more updates to fix it or have you any idea?
stv, 19 Jan 2016I see that both sim slots are 3g/4g but does anyone know if 3g can be used at same time in bot... moreNo dual sim will run both sims on 4g or 3g simultaneously. One will be 4 or 3 depending on signal, but the other will only be 2g.
Very poor battery life. Last only for 6-9 hours. Need to charge 2 times in a day.
I take/receive only 1-2 short calls per day.
I do not send text massages. Receive about 30 from service provider.
Use Whatsapp/Viber for text only.
Very limited internet browsing.
DM, 02 Mar 2016Can you use a memcard on the sim 2 slot instead,if you wont be using 2 simcards?obviously you can't or everybody would have bought it instead of the single sim version
Finally, as of this writing (March 25, 2016) I am receiving Marshmallow Update for SM-G920FD here in the Philippines.
dare2bee, 28 Feb 2016Can someone clarify that BOTH Sim1 & Sim2 to can be on 4G/LTE allbeit that you can only us... moreI have the phone and I can confirm that while any SIM is on 2G only, the other sim can be 4G
Can you use a memcard on the sim 2 slot instead,if you wont be using 2 simcards?
Anonymous, 27 Dec 2015battery drains very fast. Till date this is worst battery that i have seen in any phone i have... moreIm choosing s6 or a5 2016. Im already disappointed to s6 because of its battery life. Battery is very important.
Can someone clarify that BOTH Sim1 & Sim2 to can be on 4G/LTE allbeit that you can only use one at a time. Thx, Dare2bee -Australia
Liblan, 15 Jan 2016I know a dual sim phone cannot have both networks on 3g or 4g at the same time, but when I tra... moreIt allows both Sim slot to use 3G/4G, but only one at a time. I am using it now.
Its mid feb. But there is no update of Marshmallow. Though I am loyal to Samsung, this time i am fed up with this product.
DON'T BUY THIS PHONE, it is always losing signal, i sold it after 3 weeks only, plus battery sucks big time.
I'm starting to get worried. So far, I haven't received any updates. It's already February. There could be a slightly high chance that the Duos line will be left out in the dark.
stv, 19 Jan 2016I see that both sim slots are 3g/4g but does anyone know if 3g can be used at same time in bot... moreI believe only one sim card can use 3G or 4G st any one time. (hundreds of revues state this) If however, as you state both sim slots are capable of supporting 3 and 4G, the sim management tool can be used to decide which sim card uses the 3 or 4g network.. The other sim card will standby on 2G.
Which website states both sim slots are capable of supporting 3/4G? I've been looking for this information. Thanks