LTE with Jolla C [released]

answered 2016-07-29 15:36:09 +0200

peremen
1651 ●27 ●41 ●42

http://peremen.name/

updated 2016-09-01 14:43:26 +0200

I highly assume that it is Jolla's fault.

Background: LTE network can ask the phone about its supported capabilities (UECapabilityInformation), including which bands are supported [1]. I have some testing equipment, and it reported that only Band 1/3 are supported on Jolla C. As a result, Band 7/20 networks are not correctly working.

Here is the trace:

[1] 3GPP TS 36.331

Update 2016. 8. 9:

I tried to enable B7/B20 using Qualcomm tools but there was no luck. Qualcomm baseband stores its internal configuration inside NV values, and it is accessible via their proprietary tools. NV item 6828 and 6829 is related to which bands are enabled. Converting the number to binary, LSB starts from Band 1, n-th bit corresponds to Band n is enabled or not. Usually NV 6828 and 6829 are the same on most phones. For example, my Nexus 5 has LTE B1/3/5/7/8/20 enabled and NV 6828/6829 says this:

• 524501 == b'10000000000011010101'

You can see 1, 3, 5, 7, 8, 20th bits are enabled. On Jolla C, NV 6828 is set to 524357 and 6829 is 80045. Unlike most Qualcomm devices both NV's are different. I think this is mistake in baseband firmware, as 0x80045 == 524357 in base 10. When converting both two into binary, it says like this:

• 80045 == b'00010011100010101101'
• 524357 == b'10000000000001000101'

As you can notice, only 1st and 3rd bits are the same, and coincidentally only LTE B1/B3 is enabled. I manually modified NV values but LTE B7/B20 is still not there (tested using Vodafone DE SIM card). Please fix the baseband issues, Jolla.

Also I have reported the original JP-1301's baseband issue long ago, but still didn't got the response yet.

Update 2016. 8. 31:

Now Jolla C reports that Band 7 and 20 are supported. Although it now sees the LTE networks in Band 20, I don't have SIM cards right now so I couldn't check whether it really connects atm. Looks like others have success reports.

Update 2016. 9. 1:

Jolla C picks up Vodafone DE network utilizing Band 20. About other LTE failures, as far as I know simultaneously catching LTE for both SIM slots are not possible. I would suggest configuring network preferences if you have problems.

answered 2016-07-11 11:36:00 +0200

James
4624 ●36 ●37 ●35

  moderator

Hi!

Thank you for noticing a potential issue!

I can't comment at the moment as the case is now under investigation.

I will get back to this as soon as I have an answer. (Please feel free to remind me via Twitter in a week or so!)

Cheers, James

answered 2016-07-18 15:14:17 +0200

Pimpreneil
181 ●1 ●3 ●8

http://www.arnaud-lejosne...

Same issue here. I work in Paris city center with a very good 4G coverage, I have a Jolla 1 (2.0.1.11) and received my Jolla C today (2.0.2.43). With the same simcard on the Orange France network, I have 4G on the Jolla 1 and 3G only on the Jolla C. Here is what I get from ofono:

On the Jolla C:

[nemo@Sailfish ~]$ dbus-send --system --print-reply --dest=org.ofono /ril_0 org.ofono.NetworkRegistration.GetProperties
method return sender=:1.7 -> dest=:1.92 reply_serial=2
   array [
      dict entry(
         string "Status"
         variant             string "registered"
      )
      dict entry(
         string "Mode"
         variant             string "auto"
      )
      dict entry(
         string "LocationAreaCode"
         variant             uint16 25094
      )
      dict entry(
         string "CellId"
         variant             uint32 962027
      )
      dict entry(
         string "Technology"
         variant             string "umts"
      )
      dict entry(
         string "MobileCountryCode"
         variant             string "208"
      )
      dict entry(
         string "MobileNetworkCode"
         variant             string "01"
      )
      dict entry(
         string "Name"
         variant             string "Orange F"
      )
      dict entry(
         string "Strength"
         variant             byte 38
      )
   ]
[nemo@Sailfish ~]$ dbus-send --system --print-reply --dest=org.ofono /ril_0 org.ofono.RadioSettings.GetProperties
method return sender=:1.7 -> dest=:1.93 reply_serial=2
   array [
      dict entry(
         string "TechnologyPreference"
         variant             string "lte"
      )
      dict entry(
         string "AvailableTechnologies"
         variant             array [
               string "gsm"
               string "umts"
               string "lte"
            ]
      )
   ]

On the Jolla 1:

[nemo@Jolla ~]$ dbus-send --system --print-reply --dest=org.ofono /ril_0 org.ofono.NetworkRegistration.GetProperties
method return sender=:1.8 -> dest=:1.182 reply_serial=2
   array [
      dict entry(
         string "Status"
         variant             string "registered"
      )
      dict entry(
         string "Mode"
         variant             string "auto"
      )
      dict entry(
         string "CellId"
         variant             uint32 23987969
      )
      dict entry(
         string "Technology"
         variant             string "lte"
      )
      dict entry(
         string "MobileCountryCode"
         variant             string "208"
      )
      dict entry(
         string "MobileNetworkCode"
         variant             string "01"
      )
      dict entry(
         string "Name"
         variant             string "Orange F"
      )
      dict entry(
         string "Strength"
         variant             byte 64
      )
   ]

dbus-send --system --print-reply --dest=org.ofono /ril_0 org.ofono.RadioSettings.GetProperties
method return sender=:1.8 -> dest=:1.184 reply_serial=2
   array [
      dict entry(
         string "TechnologyPreference"
         variant             string "any"
      )
   ]

I am available to test more commands if needed ;)

answered 2016-08-04 17:22:55 +0200

MoritzJT
2049 ●38 ●59 ●63

Why does the LTE situation with Jolla C no longer specify as a bug? @jiit Will we hear about a missing implementation or even worse, having to send in the devices for subsequent delivery? :-O

I hope it's not a missing configuration that will not be deployed via software update.

answered 2016-07-20 19:59:53 +0200

mosen
9271 ●92 ●132 ●145

http://mosushi.de/

updated 2016-09-01 14:36:17 +0200

Same issue, in my case its Düsseldorf region, i never had 4G during the 2 days i use Jolla C with E-Plus and Vodafone Sims operating in Dualsim. What to report so we can help debugging?

EDIT: Solved by 2.0.2.51 update!

answered 2016-07-25 12:13:32 +0200

evo3de
13567 ●164 ●227 ●231

http://www.tomatenmark.ne...

updated 2016-09-01 14:40:35 +0200

Same issue here at area of nuremberg, operator "O2" @Germany

Edit: Update to 2.0.2.51 fixed it

answered 2016-08-31 12:39:19 +0200

Dreej
4686 ●62 ●86 ●84

http://www.aral.de/

updated 2016-08-31 12:40:26 +0200

Dear Jolla team, do you have any update for this issue? the announced update is still not provided. I thought the fix already exists... please roll out the fix without any other fixes. first priority should be a properly working phone with functioning basics. thank you

answered 2016-07-29 10:23:39 +0200

Dreej
4686 ●62 ●86 ●84

http://www.aral.de/

It seems that is a bigger problem. after updating Jolla 1 and Jolla C to 2.0.2.48, I still have the same issue. Jolla 1 good LTE connection. Jolla C nothing, Only 2G. Vodafone Germany with the same number, (twin card) rural region

answered 2016-08-02 11:16:19 +0200

sjtoik
121 ●2 ●6 ●7

Could this be the reason for battery drain I'm experiencing with Jolla C with two SIM cards from the same operator? I noticed, that the screen lits up occasionally and displayed "Connected" message. After upgrade to Aurajoki screen doesn't wake up anymore, but it appears that the bandwidth miss match is still existing and could end up keeping both radios on for the most of the time.