external battery pack kb
external battery pack kb
Have a plenty of time, try to play some apps that are already installed on the phone, even high performance games and test the sensitivity of the screen interface. Remember, this is really crucial because most of the previous owners might already drop it on the ground for several times in the past, so it will directly impact to the sensitivity of the screen. 5. Check if There is Any Glitch or Weird Colors Reproduction on the Screen Besides its sensitivity, the other important thing to check on the screen is the display. Usually, used smartphones have been dropped for several times by the previous owners.
Therefore, it’s really important for you to see the whole area on the screen to check if there is any glitch or weird line on color reproduction around the screen. If you see any of these, then the screen is not fine. 6. Make Sure that the Battery is still Pretty Good There is no doubt that battery is one of the most important elements in smartphones. Most of touch screen phones, even the iPhone, have weak battery life (with the exception of Samsung or Motorola flagships of course). Therefore, it’s really crucial to always run a test on this sector every time you want to buy used smartphones.
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To name of few, you can do things like playing high performance 3D games or watching movies/videos to make sure that the battery is still in pretty good condition, if not great. If the battery drains pretty quickly even when you just open the photos or listen some songs (which are not really energy consuming activities), then there is something wrong with the battery. 7. Check if the Camera’s Shutter Key (if There is Any) Still Works Some of smartphones usually have the physical shutter key for shooting photos/videos, even though it can be replaced with the on-screen virtual button.
However, on some phones, there is a feature that lets you capture photos with shutter key even when the screen is still locked (e.g., Sony Xperia S, etc). That’s why, although you may not use it very often, always do a quick test on this shutter key by pressing it over and over again just to make sure that this button still works perfectly. 8. Ensure that the Cellular and Wi-Fi Connectivity Still Work Great Connectivity is the other important element on smartphone. Without this sector, your used phone will be pretty much useless for you. You cannot surf the web, download stuff or connect the apps to internet.
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Therefore, always run the test of this connectivity feature by browsing the web with the pre-installed browser or any other apps that require 3G/4G and Wi-Fi connectivity on that used smartphone. 9. Check the Bluetooth, NFC or Any Other Off-line Connectivity These connectivity features can be really important in the future because you like it or not, you will need Bluetooth and will use it very often to share contents like photos/music/videos/files with the other devices, while NFC is also really important for the future’s mobile payment. Therefore, never forget to always run the quick test on Bluetooth, NFC or other several offline connectivity features on the phone.
10. Test the Sound Quality of the Speaker Making a phone call is the reason why cell phone is invented in the first place. Without it, your phone shouldn’t be called as a phone. That’s why, if this feature doesn’t work properly, then your used phone will be useless in the future.
So it’s also really important to always run the test of this feature by making a random call on other devices and hear if there is something wrong with its sound quality, signal or its loudspeaker. 11.
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