Well, I (& all of us here, I think), was really counting on this 5.1 update because I'm looking for its features & fixes (including better compromise between performance & power consumption), because as I still use 4.2, I don't have any objections for performance, but battery life is very weak (even after removing, killing, freezing, hibernating most of apps), especially on when using more heavy tasks just for a couple of minutes each day. I really miss other kernel features that are not available in released JB & KK kernels so far, like I/O accounting, USB 3.0 charging support, USB Host (even non-powered), ExFAT & other FS support, better CPU & IO schedulers and CPU frequency scaling fixes (like CPU goes to static ~1142MHz in sleep state, regardless of cpufreq kernel settings for any scheduler to set min/max/cur frequencies, but from power consumption it looks like ~750-850MHz frequencies with 6 cores disabled (using only 2 cores) seem to be most power effective for sleep states for MT6592). Other things are mentioned GPU drivers - other phones with MT6592 & KK have better GPU kernel drivers for our MALI 450 (for example Lenovo A8/A806,...), which are better in both performance & power consumption. There are even more things waiting for fixes on Coolpad side, but these are the first things that come to my mind for kernel side.
Sorry, but I can't take a picture of phone with cover. I don't have any other device with camera with me (besides laptop with very poor 0,3M camera) to make a photo. All I could do is just cover photo without a phone, using F1 after removing it from cover: http://postimg.org/gallery/lg65x98o/ That metal ring for camera is not from this cover - it's the one that I have glued for use with external lens (and I sill have glue around it, which I'll have to clean). Originally camera hole looked exactly like on photos from case offer.
Well, I was concerned about thickness, too, but it's not that thick as I thought. Anyway, for sure it's thicker than your previous cover (which replaced phone's back), but it's not bad and comparing it with my previous silicone cover or phone without a cover, this one I like the most & it seems that it gives at least some sort of phone protection (can't confirm that yet, unless I'll drop the phone).
Finally received it (gold one). It's really awesome (exactly like on photos here): http://www.aliexpress.com/item/Metal-Aluminum-Transparent-Clear-Acrylic-Hard-Back-Case-For-Coolpad-Dashen-F1-8297-Luxury-Cover-for/32407787508.html (I have bought it even cheaper from other seller, which had old case in his offer, but I asked does he have this new a'la iPhone 6 and he sent me the one above).
It is really aluminium, back cover is comparable to "tempered glass" (maybe it's not real glass, but at least looks like good quality acrylic), which I bought sometime ago for screen protection. Buttons work even better than without the cover (and much better usable than in silicone cover), phone fits perfectly, not moving inside, metal frame is a bit higher than screen so looks like screen corners are somewhat protected from accident falling down, but phone is not that much thicker than without this cover (seems to be less thicker than with silicone case). Feeling of holding the phone in this case is very good, too (despite the back is slippery, but frame doesn't and phone doesn't seem to slip of the hand). I wear phone in jeans pocket (walking, running, pulling it in & out very often) and having such cover since about a week so far no scratches, but today I have sticked to it metal ring for magnetic additional lens (I have exchangeable telephoto 2x optical zoom, fisheye, wide & macro lens - these are quite nice equipment, too) using super glue (it didn't want to stick using it's own glue) and unfortunately some glue has slopped around so now I'm looking for a way to clean it to make it beauty again (washing liquid, soap, toothpaste, WD-40, hot water... didn't help so far but at least didn't corrupt the back cover, even that I tried to wipe it very hard in many ways).
Anyway, it seems to be best cover that I had so far for any phone. Just one thing - transparent window for Coolpad logo is like on photo (up) so doesn't match logo on our phones (down side), but it doesn't affect anything and you can put inside there anything you want.
Thx for reply. Yeah, that's a pitty. Well, there are very few apps that can use accelerometers as alternative for gyroscope. But anyway, I think that cardboard could be at least good for 3D movies watching (versions with less zooming lens).
Anyone to at least try the apps/games/demos on other ROMs only?: https://www.google.com/get/cardboard/
or other VR cardboard apps/games.
They don't work properly on CoolUI 4.2.2, but I'd like to know if there's no such problem on other ROMs.
Carboard glasses are not needed to check if any of those apps work or not - just the phone and app installation from Google Play.
155 views since yesterday and nobody wants to help with checking it?
I would check it myself flashing other ROMs, but I have everything configured "for me" on current ROM and need to be available on the phone all the time.
I think it's worth a try - our phone should fit requirements (including display - newer cheap cardboard or plastic VR glasses are OK with 720P on 5") and people trying such cardboards are very surprised how fun it is for both "big screen" movie watching or other true VR games/apps.
Has anyone tried to use Google Cardboard app & glasses ( https://www.google.com/get/cardboard/ ) with our Coolpad F1 on any ROM?
I've found info about it today and I tried to test apps first before I'll decide for glasses, but unfortunately most apps for that have problems on CoolUI 4.2.2 041 that I still use (black split screen only on official demos & just vertical lines (but also split screen) on Unity-based games).
Would you please it check if it's the same on other 4.2.2 & 4.4.2 ROMs that you use?
Well, since beginning I'm using cheapest transparent silicone cover (which got already yellow and ugly and I'm also looking for a bit prettier replacement).
It's definitely one of the bests to protect the phone of any accidents as my phone got dropped from very fast bicycle ride to hard ground - it got bounced many times, but fortunately everything is OK, no sign of this accident (not mentioning other smaller drops & sits on it).
I was looking for replacement now as I even can't cleanup this silicone cover and it's making problems with charger connector (I could cut that part from the case but then I think that phone could get dirt in the MicroUSB socket).
I thought about that pretty glass+aluminium frame covers but they are a bit more expensive than the cash that I want to spend on a cover and I'm very worried that I's not too good for phone protection.
So I see some cheaper alternatives that althrough they are a bit more thicker and not as glossy but from first sight look like they give more protection (small frame over the screen & plastic back):
What do you think about them?
Edit: I have bought one of them & I'll share impression when I'll receive it (in around a month).
Has anyone any experience with Kingston SDCA3/64GB microSDXC UHS-I U3 card (90R/80W)?
I'm going to buy it today for F1.
Up to now I'm using SDCA10/32GB microSDHC UHS-I U1 card (90R/45W), which works great in F1, but I'm running out of space all the time so looking for bigger capacity with equal or better performance.
Strange that I have the same problem but with stock cable.
I agree that's very annoying.
Many other cables tested work a lot better with my F1 (for example stock from Lenovo A850+, stock charger from my childs old Samsung Galaxy Y, tablets… ).
I'm also searching for cheap good (at least a bit longer) cable.