Samsung Galaxy A40 Troubleshooting

What issues are you experiencing?



  • How to take a screenshot
  • Unfortunately, Camera has stopped
  • Warning: Camera failed
  • Camera is out of focus

Calls & Texts


  • No sound and other audio issues
  • Loudspeaker doesn't have any sound
  • Bluetooth headset has no sound
  • Notifications don't play



  • Unable to read mounted SD card
  • Some apps in SD card not working
  • How to free up some storage space
  • Server storage full, unable to write on SD card



  • 64 GB ROM
  • 4 GB RAM
  • with microSD card slot, supports up to 1 TB (dedicated slot)


  • Android 9.0 (Pie)
  • Exynos 7885 (14 nm)
  • Octa-core (2x1.77 GHz Cortex-A73 & 6x1.59 GHz Cortex-A53)
  • Mali-G71 MP2


  • Comes with stereo speakers
  • 3.5mm jack
  • Active noise cancellation with dedicated mic

Battery Life

  • Non-removable Li-Po 3100 mAh battery
  • Fast battery charging 15W


  • Super AMOLED capacitive touchscreen, 16M colors
  • 5.9 inches, 85.5 cm2 (~85.5% screen-to-body ratio)
  • 1080 x 2340 pixels, 19.5:9 ratio (~437 ppi density)


  • Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
  • Bluetooth 5.0, A2DP, LE
  • NFC
  • FM radio
  • USB 3.1, Type-C 1.0 reversible connector


Main Camera

  • 16 MP, f/1.7, 26mm (wide), PDAF
  • 5 MP, f/2.2, 13mm (ultrawide)
  • LED flash, panorama, HDR
  • [email protected]

Selfie Camera


  • Dimensions: 144.4 x 69.2 x 7.9 mm (5.69 x 2.72 x 0.31 in)
  • Weight: 140 g (4.94 oz)
  • Build: Front glass, plastic body
  • SIM: Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)

Recent Guides

What to do if your Samsung Galaxy A40 started running slow

By Felix Harley | November 7, 2019

While the Samsung Galaxy A40 is a mid-range device, you can still expect it to run fast and smooth, but it seems like some owners of this phone have started getting performance issues. Some reported that their units started running slow after an update, while others said theirs became laggy or keeps freezing.  While performance

How to fix a Samsung Galaxy A40 with screen flickering issue

By Felix Harley | November 7, 2019

The screen flickering issue can be a sign of a hardware problem and that problem seems to be bothering some owners of the Samsung Galaxy A40. However, it is also a possible software-related problem as some apps may cause issues like this. There are also times when the firmware glitches and may result to some

How To Fix The Samsung Galaxy A40 Won’t Charge Issue

By Chad | November 7, 2019

The #Samsung #Galaxy #A40 is a premium mid-range Android smartphone model that was released earlier this year. It has a solid build quality made of a plastic body and a 5.9 inch Super AMOLED screen having a resolution of 1080 x 2340 pixels. It uses a dual rear camera system and a single 25MP selfie

How to fix Samsung Galaxy A40 stuck on Black screen of death

By Felix Harley | November 6, 2019

When your Samsung Galaxy A40, or any smartphone for that matter, turns off by itself and would no longer turn on, it might be suffering from the problem we often refer to as the Black Screen of Death (BSoD). It leaves an impression that the device has a serious hardware problem but in reality, it’s

How to fix your Samsung Galaxy A40 with WiFi, Bluetooth and Network issues

By Harjie Hisona | November 5, 2019

The new Samsung Galaxy A40, while mid-range device, comes packed with impressive hardware and it’s actually very competitive. But no matter how fast or good a phone is, there would always come a time when issues will occur and the most common of them all is always related to the network. In this post, I

Samsung Galaxy A40 won’t send MMS after an update

By Felix Harley | November 1, 2019

When you send a text message and you attach anything to it, the message will be automatically be converted to MMS. It requires to have mobile data enabled for you to transmit such message. Some owners of the Samsung Galaxy A40 have complained about the problem wherein their phone won’t send MMS anymore. According to