Samsung S8 AFC charging time

Long time no Samsung. 🙂 Mostly because of the previous experience (read in Russian). But anyway did a test of Adaptive Fast Charging (AFC) from Samsung. Using Samsung S8 with AFC charger from the box.

Charging Samsung S8

What can I say?
I see some cheating with charging percentage displayed by the phone to get “Full Charge in 90 minutes” in reviews.

But the real numbers are more like 120 minutes.

Just to compare with a device that shows true percentage see image below

iPhone 8 charging

50% 80% Show 100% Real 100%
Apple iPhone 8 5v 12W charger 00:28:00 00:51:00 01:41:00 01:41:00
Samsung Galaxy S8 AFC 00:44:00 01:08:00 01:28:00 01:56:00

NextBase 612GW

First 4K/GPS/WiFi Dashcam on market.

NextBase 612GW

Metal body looks good. Device is releatively heavy. Weights distribution and center of mass are not perfect and it sometimes affects image quality (right side vibration). Compatibility with 412GW GPS connector (make upgrade easy and fast). A touchscreen is much better than sensor buttons on 412GW. A physical power button is also good. What is absolutely wrong about this dashcam is Wi-Fi speed. View of any HD video impossible. Copy 1 minute of 4K video (340MB) is taking so much time (more than 10 minutes) that my 3 attempts to do that failed for different reasons. Wi-Fi is only usable for preview of Low-Resolution files (if enabled)


  • 4K or 1440/60p
  • daylight video quality
  • touchscreen/usability
  • GPS
  • removable CPL filter
  • timelapse and parking mode
  • speedometer screensaver


  • expensive
  • slow charging (2h, 5v 0.15A)
  • Wi-Fi is slow beyond acceptable level
  • Video quality at Night (due to CPL?)
  • not removable “NextBase” logo

Technical details:

  • Accumulator 3.7v 280 mAh 1.04Wh
  • SoC (CPU): Ambarella A12S75
  • RAM:  512 MB DDR3L 1866
  • ROM: 256 MB NAND Flash

Continue reading “NextBase 612GW”


Yet another USB Tester with PC/MAC connectivity. This time using Bluetooth.

PC Software

Application is old-shool and simple. It cannot resize to use full screen, cannot autodetect port to use, cannot show large graphs.

Continue reading “UM24C”

Charging iPhone X

iPhone X got 1.5 times increased battery capacity in compare to iPhone 8 and now there is some difference appear in charging time using 12W and 29W Apple chargers. Also, standard USB port now charging more than 6 hours.

50% 80% 100%
PC Port USB 2.0 03:00:00 04:40:00 06:10:00
Apple 5W charger 01:25:00 02:05:00 03:25:00
Apple 12W charger 00:35:00 01:05:00 02:10:00
Apple 29W charger 00:30:00 00:55:00 01:55:00

iPhone X charging time

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Apple iPhone 8 charging time

Charging iPhone using different chargers. Results time depends on charger a lot. Starting from long 4 hours charge using standard PC USB port with 5v 0.5A. Ending with 1h 40m using Apple 29W type-c charger with USB PD 14.7v 2A. Despite 29W charger is actually the best one it cost too much to use it as iPhone charger – 75$ (charger and cable). There is other option available for fast charge iPhone. Apple 12W iPad charger with 5.1v 2.4A. It is only ~20$. Same 1h 40m for 100% charge.

50% 80% 100%
PC Port USB 2.0 1:45:00 2:55:00 4:00:00
Apple 5W charger 0:52:00 1:25:00 2:20:00
Apple 12W charger (add  19$) 0:26:00 0:50:00 1:40:00
Apple 29W charger (add 49$ + 25$) 0:26:00 0:50:00 1:40:00

iPhone 8 charging time

Fast charging is actually happens only when battery is more or less empty. Charging from 80% to 100% may take same time that from 0% to 80%.

See charging current and voltage details on graphs below for all types of chargers

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iPhone 8

First look on iPhone 8 and iPhone 7 comparison shows that phones have more in common than differences.

iPhone 8 and iPhone 7 have same:

  • size and bumping camera
  • photos (camera) quality
  • accessories compatibility
  • accessories in the box
  • charging time
  • both need cases

iPhone 8

  • is heavier
  • 20-30% faster
  • support wireless charging
  • support USB PD 14.7v charging
  • have glass back
  • got screen auto white balance (True Tone)

iPhone 7 and iPhone 8

As usual a little bit faster than previous model. Little bit heavier. Same size. Compatible with existing accessories. iPhone 8 support charging with 14.7 volt (up to 80%, using Apple USB Type-C power adapter). But quick charge test shows more or less same charging time for both iPhone 7 and iPhone 8. Same need to use case because of bumping camera. Plus, another reason to use case with iPhone 8 is because of its glass back. It may be broken and it get dirty looks fast.  Minus one reason for the case is less slip grip of iPhone 8. The phone is no longer try to fell from a hand all the time. When using a phone in case it is hard to say if it is iPhone 7 or iPhone 8. Screen scratch protection is still not perfect. Couple of days in pocket with coins and/or second phone – visible scratches. Same USB 2.0 wired sync speed. Type-C to Lightning cable is also USB 2.0 sync speed. Phone does not have Apple wireless charger yet, but Samsung and other Qi charges work for iPhone 8.

Continue reading “iPhone 8”