HISTORICAL SUPPORT REPORT
Security support dates in 2021
32 reviewed records have a security-support date in 2021, across 9 brands.
Some dates mark a published minimum or a calculated policy horizon. They do not all mean that updates stopped.
Historical year, current evidence: this report is rebuilt from the current catalog. It is not an archived snapshot of what we knew at the time.
Most recent source check among these records: 2026-09-24
Records by brand
These counts describe our reviewed coverage, not sales or market share.
Month-by-month evidence
Only documented months are assigned to a month. A year-only date is listed separately.
April 2021
| Device and region | Recorded date | Date basis | Evidence and source |
|---|---|---|---|
| Nokia 1Nokia 1 · International manufacturer listing | Apr 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
| Nokia 6.1Nokia 6.1 · International manufacturer listing | Apr 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
| Nokia 7 PlusNokia 7 Plus · International manufacturer listing | Apr 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
May 2021
| Device and region | Recorded date | Date basis | Evidence and source |
|---|---|---|---|
| Nokia 8 SiroccoNokia 8 Sirocco · International manufacturer listing | May 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
June 2021
| Device and region | Recorded date | Date basis | Evidence and source |
|---|---|---|---|
| Acer Chromebook 11 (C740)Acer Chromebook 11 (C740) · Worldwide ChromeOS Auto Update policy | Jun 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Acer Chromebook 15 (CB5-571)CB5-571, C910 · Worldwide ChromeOS Auto Update policy | Jun 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Dell Chromebook 13 (7310)Dell Chromebook 13 (7310) · Worldwide ChromeOS Auto Update policy | Jun 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Google Chromebook Pixel (2015)Google Chromebook Pixel (2015) · Worldwide ChromeOS Auto Update policy | Jun 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Lenovo N20 ChromebookLenovo N20 Chromebook · Worldwide ChromeOS Auto Update policy | Jun 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
July 2021
| Device and region | Recorded date | Date basis | Evidence and source |
|---|---|---|---|
| Nokia 3.1Nokia 3.1 · International manufacturer listing | Jul 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
August 2021
| Device and region | Recorded date | Date basis | Evidence and source |
|---|---|---|---|
| Nokia 2.1Nokia 2.1 · International manufacturer listing | Aug 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
| Nokia 5.1Nokia 5.1 · International manufacturer listing | Aug 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
| Nokia 6.1 PlusNokia 6.1 Plus · International manufacturer listing | Aug 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
September 2021
| Device and region | Recorded date | Date basis | Evidence and source |
|---|---|---|---|
| Acer Chromebook 11 (CB3-111)CB3-111, C730, C730E · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Acer Chromebook 11 (CB3-131)CB3-131, C735 · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Acer Chromebook 15 (CB3-531)Acer Chromebook 15 (CB3-531) · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| ASUS Chromebook C200ASUS Chromebook C200 · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| ASUS Chromebook C300ASUS Chromebook C300 · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| CTL N6 Education ChromebookCTL N6 Education Chromebook · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Dell Chromebook 11Dell Chromebook 11 · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Dell Chromebook 11 (3120)Dell Chromebook 11 (3120) · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| HP Chromebook 11 G3HP Chromebook 11 G3 · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| HP Chromebook 11 G4/G4 EEHP Chromebook 11 G4/G4 EE · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| HP Chromebook 14 G4HP Chromebook 14 G4 · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Lenovo 100S ChromebookLenovo 100S Chromebook · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Lenovo N21 ChromebookLenovo N21 Chromebook · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
| Samsung Chromebook 2 11 - XE500C12Samsung Chromebook 2 11 - XE500C12 · Worldwide ChromeOS Auto Update policy | Sep 2021MONTH | Manufacturer-stated end | Grade A Google Chrome Enterprise and Education Help ↗Source checked: 2026-09-24 |
October 2021
| Device and region | Recorded date | Date basis | Evidence and source |
|---|---|---|---|
| Nokia 3.1 PlusNokia 3.1 Plus · International manufacturer listing | Oct 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
| Nokia 5.1 PlusNokia 5.1 Plus · International manufacturer listing | Oct 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
November 2021
| Device and region | Recorded date | Date basis | Evidence and source |
|---|---|---|---|
| Nokia 7.1Nokia 7.1 · International manufacturer listing | Nov 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
December 2021
| Device and region | Recorded date | Date basis | Evidence and source |
|---|---|---|---|
| Nokia 8.1Nokia 8.1 · International manufacturer listing | Dec 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
| Nokia C1Nokia C1 · International manufacturer listing | Dec 1, 2021DAY | Manufacturer-stated end | Grade A HMD Global ↗Source checked: 2026-09-04 |
What to do with a device on this list
- Open the model record and match its model number, hardware revision and region.
- Check whether the recorded date is a final end, a minimum or a policy calculation.
- Compare the installed firmware and patch level with the manufacturer's current release information.
- Review repair options and remaining support before buying a replacement.
Check your device → · Understand end of support → · Compare remaining support →
Questions about this report
Did every device in this report lose updates?
No. A manufacturer-stated end, a calculated policy horizon and a minimum commitment mean different things. Passing a minimum date does not confirm the final patch. Check the date basis and linked source for your exact model.
Is this a complete historical list?
No. This is a retrospective view of today's reviewed catalog, not a snapshot captured in that year or a list of every device sold. Missing models and empty years indicate a coverage gap; they do not establish continued support.
Does the date identify the last security patch?
Not necessarily. A support commitment is different from a firmware release date or its security patch level. Month-only and year-only evidence must not be read as a precise final day.
What should I do before replacing a device?
Match the model and region, check the manufacturer's current notice and install applicable updates. Compare remaining support, repair cost and the accounts you use before choosing a supported replacement. A support date alone is not a safety assessment.