Re: [tz] [IANA #985615] Sudan Time Zone change
Dear Eggert, This is Mohammed Elsir from Zain, the first mobile operator in Sudan. Actually our mobile network sends the correct time zone which is GMT+2 as seen in below trace. [cid:image015.png@01D353DB.A197A6D0] The thing is that some devices such as most of feature/legacy/old phones accept the sent time zone and change time correctly. But some Android device such as Samsung, Huawei, Lenovo and part of HTC reject the provided time zone and display the time zone based on lookup table inside the handset. Below is an example from Lenovo P2. [cid:image016.png@01D353DB.A197A6D0] Some Handset manufactures such as apple sent messages over the internet asking for handset restart to get the new time zone. Below is an examples. [cid:image003.png@01D353DD.1DA00320] I do appreciate your kind support to contact Android handset manufactures such as Samsung, Huawei and Lenovo asking them about 1. Why their handsets reject the network provided time zone. 2. How can they solve this issue? Should you need further discussion I am available on Skype @ mohammed_elsir_64 or WhatsApp @ +249912311500. Just let me know the appropriate time for you to discuss further. Thanks in advance for your kind support. Best Regards, Mohammed Elsir M.Sc., PMP,ITIL-SO From: Ahmed Ali Ahmed Ali Sent: Wednesday, November 01, 2017 8:18 PM To: Ahmed Ibrahim Ahmed Abdelkareem <Ahmed.AbdElkareem@sd.zain.com>; Mohammed Elsir Osman Alebeid <Mohammed.ElsirOsman@sd.zain.com>; Mugahed Bakri Mohammed Alhag <Mugahed.Bakri@sd.zain.com> Cc: Faisal El Muftah <Faisal.Nourelhuda@sd.zain.com>; Nizar Musa <Nizar.Musa@sd.zain.com>; Ali Boosh <Ali.Boosh@sd.zain.com>; Badr Eldin Abdalla Mohamed Nour <Badr.Nour@sd.zain.com> Subject: Fwd: [tz] [IANA #985615] Sudan Time Zone change Dears, Please check the below feedback from IANA Thanks, Sent from Samsung Mobile -------- Original message -------- From: ahmed.atyya@ntc.gov.sd<mailto:ahmed.atyya@ntc.gov.sd> Date:11/01/2017 20:19 (GMT+03:00) To: Faisal El Muftah , Ahmed Ali Ahmed Ali , Regulatory , Hiba Abbas Yousif Eltigani , Mohamed Gaafar Ibrahim Bashir Corporate Services - MTN - Sudan , Nafisa Mahmoud Karamalla Corporate Services - MTN - Sudan , Mohammed Abdelraheem Abdelmagid Elkhalifa , Munir Taha Elkabashi Hassan Elfaki Cc: abdelhafiz , Afaf Nijomi , yahia , mohamed elhaj Subject: Fwd: [tz] [IANA #985615] Sudan Time Zone change Dears Please find below email from IANA for your kind revision to find the way out; we will also discuss the proposal of Sudan Embassy regards Ahmed Atyya ----- Forwarded Message ----- From: "Paul Eggert" <eggert@cs.ucla.edu<mailto:eggert@cs.ucla.edu>> To: "ahmed atyya" <ahmed.atyya@ntc.gov.sd<mailto:ahmed.atyya@ntc.gov.sd>> Cc: "yahia" <yahia@ntc.gov.sd<mailto:yahia@ntc.gov.sd>>, "Matt Johnson" <mj1856@hotmail.com<mailto:mj1856@hotmail.com>>, "Time Zone Mailing List" <tz@iana.org<mailto:tz@iana.org>>, "itisalat" <itisalat@ntc.gov.sd<mailto:itisalat@ntc.gov.sd>>, "abdin" <abdin@ntc.gov.sd<mailto:abdin@ntc.gov.sd>>, "nadir" <nadir@ntc.gov.sd<mailto:nadir@ntc.gov.sd>>, "abdelhafiz" <abdelhafiz@ntc.gov.sd<mailto:abdelhafiz@ntc.gov.sd>> Sent: Wednesday, November 1, 2017 7:57:00 PM Subject: Re: [tz] [IANA #985615] Sudan Time Zone change On 11/01/2017 01:35 AM, ahmed.atyya@ntc.gov.sd<mailto:ahmed.atyya@ntc.gov.sd> wrote:
With respect to the topic, please be updated that the change was applied successfully, Apple handsets did the update automatically but Android handsets didn’t.
In what sense didn't they change? My Android phone's time zone menu has entries for Cairo, Harare, and Nairobi, but not for Khartoum. If it is a matter of the user's time zone settings, users need to change from (say) Nairobi time to Cairo time. On the other hand, if it is a matter of the time zone supplied from the cellular service company, then this is something for your local cell company to address.
We kindly request to communicate with Google in order to update Android OS with the changes for the handsets take the time automatically.
As I understand it, Google engineers monitor this mailing list and so already know about the time zone change. There is a gap between the time that Google releases software updates, and the time that phones actually change. For example, even though I have a Google Nexus 6P phone and live in the United States, my phone is well behind Google's release schedule: it upgraded over-the-air to Android 8.0 Oreo only last night, even though Oreo was released on August 21 *. Other manufacturers' Android phones are even slower to update. This underscores the importance of governments announcing time zone changes well in advance: we currently recommend one years' advance notice. When other countries have run into similar problems, they've had some luck by contacting the U.S. State Department and asking for its help in adjusting the priorities of commercial providers. I suggest that you contact the U.S. Deputy Chief of Mission in Sudan and ask for his advice for how to proceed. See: https://sd.usembassy.gov/our-relationship/dcm/ https://sd.usembassy.gov/embassy/khartoum/offices-departments/public-affairs... From what you tell me, though, the problem is likely to involve the protocols used by your local cellular service providers (that is, the problem may not be in Android at all), so they'll need to be in contact with their suppliers too. [cid:image001.png@01D353B6.A6960840] Ahmed Ahmedali Market Power & Competition Advance Specialist Zain SD Al Mogran, Zain Building Al Ghaba Street P.O Box: 13588 Khartoum Sudan Mobile : +249912398071 Email : Ahmed.Ahmedali@sd.zain.com<mailto:Ahmed.Ahmedali@sd.zain.com> Web : www.zain.com<http://www.zain.com> [cid:image005.jpg@01D353DD.1DA00320]<https://twitter.com/ZainSudan> [cid:image007.jpg@01D353DD.1DA00320] <https://facebook.com/ZainSudan/?fref=ts> [cid:image009.jpg@01D353DD.1DA00320] <https://plus.google.com/110542740934974723351> [cid:image011.jpg@01D353DD.1DA00320] <https://instagram.com/zainsudan/> [cid:image013.jpg@01D353DD.1DA00320] <https://linkedin.com/company/3224878?trk=tyah&trkInfo=clickedVertical%3Acompany%2CclickedEntityId%3A3224878%2Cidx%3A2-1-4%2CtarId%3A1450011212185%2Ctas%3Azain%20sudan> [cid:image023.png@01D353DD.1DA00320] <https://youtube.com/user/ZainSudanTV> [cid:image014.png@01D353B6.A6960840] [cid:image2acf2f.BMP@a4b5ec2d.4c95cc79] Mohammed Elsir Osman CT Infrastructure Operation Team Leader Zain SD Al Mogran, Zain Building Al Ghaba Street P.O Box: 13588 Khartoum Sudan Mobile : ++249912311500 Office : +24990001-3256 Email : Mohammed.ElsirOsman@sd.zain.com Web : www.zain.com [cid:image1d8d7d.PNG@e9fa88a4.43aeded8]<https://twitter.com/ZainSudan> [cid:imaged5af34.PNG@146f7ddf.4e95af19] <https://facebook.com/ZainSudan/?fref=ts> [cid:image95f784.PNG@eb17dd26.4eb485d3] <https://plus.google.com/110542740934974723351> [cid:imageb1c854.JPG@2f1af4fa.4680f52e] <https://instagram.com/zainsudan/> [cid:imagead7fe1.PNG@0e87976d.42b9ff22] <https://linkedin.com/company/3224878?trk=tyah&trkInfo=clickedVertical%3Acompany%2CclickedEntityId%3A3224878%2Cidx%3A2-1-4%2CtarId%3A1450011212185%2Ctas%3Azain%20sudan> [cid:image108d42.PNG@d8c0b630.439783e1] <https://youtube.com/user/ZainSudanTV> [cid:image400fba.PNG@9f5f39e1.45ab1906]
On 11/02/2017 04:19 AM, Mohammed Elsir Osman Alebeid wrote:
some Android device such as Samsung, Huawei, Lenovo and part of HTC reject the provided time zone and display the time zone based on lookup table inside the handset.
Since only some Android devices do this, it could be because each manufacturer has changed the time zone code or data on its own. If so, I'm afraid you may need to contact each manufacturer. I am using a Google device running Android 8.0 Oreo. Its clock settings for "Home time zone" do not list Khartoum or Sudan as an option. For GMT+2:00 in Africa it lists only Windhoek, Cairo, and Harare. For GMT+3:00 in Africa it lists only Nairobi. So perhaps phones running new-enough Android, or Android unmodified from Google, do not have the problem. I notice that Joda Time, which is a popular time zone package used in older Java implementations, does not yet have the Sudan change of 2017c. I'll CC: this to the Joda Time maintainer on the off chance that it's related.
Below is an example from Lenovo P2.
The Lenovo screenshot says it is using "network-provided time zone", and that this is "GMT +03:00 East Africa Time". So it sounds like there is some problem in Lenovo's handling of the network-provided time zone, as "GMT +03:00" is the wrong rendering for your network's "timezone: GMT + 2 hours 0 minutes". However, all this is outside the scope of the tz database, as it is independent of the NITZ protocol used by cell phones for time zones, and this means the tz mailing list can't help you. So I'm afraid you may have to take it up with Samsung etc. Unfortunately this is not something the U.S. State Dept. is likely to help with. Perhaps you can contact the South Korean embassy in Khartoum, telephone (+249) (183) 580-031 / 2, and ask for their help, and similarly for the countries of the other manufacturers.
Paul Eggert said:
So I'm afraid you may have to take it up with Samsung etc.
I regret that, although I work for Samsung Electronics, my chances of finding the correct person are approximately zero. -- Clive D.W. Feather | If you lie to the compiler, Email: clive@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646
On 2017-11-02 16:39, Paul Eggert wrote:
On 11/02/2017 04:19 AM, Mohammed Elsir Osman Alebeid wrote: The Lenovo screenshot says it is using "network-provided time zone", and that this is "GMT +03:00 East Africa Time". So it sounds like there is some problem in Lenovo's handling of the network-provided time zone, as "GMT +03:00" is the wrong rendering for your network's "timezone: GMT + 2 hours 0 minutes". However, all this is outside the scope of the tz database, as it is independent of the NITZ protocol used by cell phones for time zones, and this means the tz mailing list can't help you.
NITZ support varies across GSM RANs and appears to be about 50% from what I can find. Also updates are async and vary from after every wakeup to never. Device manufacturers work around this using alternate approaches like SNTP and tzdata. First thing may be for users to ask their telco if their mobile RAN supports NITZ. If not, or the time is off, switch off "network-provided time", set tz manually, and install an SNTP app to keep decent time, but ensure that it does not wake up the phone frequently, or use a lot of bandwidth, as badly written time and location services and apps can cause heavy network use and battery drain. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
participants (4)
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Brian Inglis -
Clive D.W. Feather -
Mohammed Elsir Osman Alebeid -
Paul Eggert