Jolla hardware internals
 

Hi guys,

Had some spare time, so I grabbed some torx screwdrivers and before the remorse feeling started to kick in, I opened my beautiful Jolla :D. This is what I've found so far:

The phone seems to be manufactured by Qisda Corporation

Some subcomponents used on the phone seems to have been manufactured by "Truly Electronics" (Screen controller?, microSD/SIM sockets flex-board)

The memory is a "Micron MT42L256M32D2LK-18" (labeled as D9QMM) it's a low power DDR2 memory
in a 216-ball FBGA package, soldered in top of the processor.
Datasheet

The main RF amplifier it's an ACPM-7251 manufactured by "Avago Technologies".
Teoricaly, it supports GSM (850/900), EDGE (1800/1900), UMTS (850/900/2100) and LTE (850)
Datasheet

There is at least another LTE RF amplifier.

The audio CODEC it's a Qualcomm WCD9304.

The PMIC it's a Qualcomm PM8038.

The NFC controller it's an PN544 (labeled as 44701) manufactured by NXP Semiconductors.
It supports read/write of ISO 14443–A, 14443-B, MIFARE, FeliCa and NFC Forum tags, and
it can emulate such devices. There's a good chance it's already hooked up into the I2C bus, so it
might be "hacked" and be used for something else than just reading TOHs.
Datasheet

The aluminium usage on the device it's merely anecdotic since it's just a thin layer covering half of the frame border, so there's no "heatsink" effect whatsoever but just a cheap way to make it look sturdier. Also, the buttons are actually made of rubber with the aluminum part glued onto them :confused:.

As a final note, I thought that my device was defective, since the audio was coming only from the left grid, but the fact is that the phone is MONO and carries just a single loudspeaker,
the grill at the right it's for the microphone.
(Now I feel dumb by thinking that, even with their weird placement, 2 grills equals two speakers, but there's no mention on the specs of the phone being Stereo :p)

I'll try to upload some of the crappy pictures I took.

Re: Jolla hardware internals
 

Very useful info - Cheers:)

Richard

Re: Jolla hardware internals
 

Assuming there was no 5 seconds remorse timer?

Re: Jolla hardware internals
 

Thanks!

Looks like there will be no LTE in Australia then :/

Although - according to Wikipedia, there is no DNA LTE 850 network, so I'm still hopeful for other frequencies to be supported.

Re: Jolla hardware internals
 

I hope too, that there is European LTE 800. Now it's legal in Finland too and first base stations will be online this week.

Re: Jolla hardware internals
 

JollaHQ already confirmed LTE bands to be bands 3 (1800 MHz), 7 (2600 MHz), 20 (800 MHz).

https://twitter.com/JollaHQ/status/417963197564747776

LTE 850 makes no sense. Its not used in neither Europe nor China, nor could they cover 6 continents with it. Hardly any networks anywhere use it.

Re: Jolla hardware internals
 

Truly is the LCD controller/screen

Re: Jolla hardware internals
 

I wonder if any of the extra pins could be for serial console connection?

Re: Jolla hardware internals
 

That RF amplifier doesn't seem to be used for anything else than 2/2.5/3G, probably there's an LTE-only amplifier on the other side of the board :).

Yep, that makes sense there's a couple of Truly boards in the device, one houses the uSD/SIM sockets, the other could be the LCD controller :confused:.


Pictures coming up :)

Re: Jolla hardware internals
 

http://s21.postimg.org/5mwlj3c47/back_a.jpg
http://s21.postimg.org/plh1z7m6v/top_a_1.jpg
http://s21.postimg.org/raq57a1w7/top_b_1.jpg
http://s21.postimg.org/qz8ouilg7/top_b_2.jpg