On my Android phone, I am getting authentication problems when I connect to my network, even if the signal strength is excellent. What should I do?
Authentication problem occurs when the “handshake” between a router and a gadget fails for any number of reasons. The handshake first consists of the gadget sending a connection request along with the password in an encrypted form to the router. The router encrypts the copy of the password stored on it and compares the received data. If it matches, it sends an acknowledge signal and the devices are connected.Try these things out:1) Forget the network in your phone and enter the password again. It probably saved the wrong password.2) Reset the router. On all routers there will be a small reset button. Keep it pressed for about 5-10s till all the lights glow and release it. The router is now back to the initial setup when it was bought. The default ssid and password will be printed on the bottom of the router. Try connecting to the router using these. If it connects you can now try and change the ssid it back to the original one.3) If even this fails, then go to the router home page by opening a browser on a device which is able to connect to it (either through WiFi or LAN cable) and enter 192.168.1.1 or 192.168.0.1 and wen requested for a username and password, look for them under the router again. It is usually admin and admin/password. Explore around till you reach the wireless setup page with the option encryption scheme. It is wpa2-psk by default. Change it to wep. This is an older encryption scheme which is not as secure as wpa2-psk but it's enough for a home network. Enter an 8 character password and save these settings. Now give it a try. If this works then your mobile probably has some problem authenticating with a wpa2-psk based router.Good luck and Happy debugging!!!
How can I fix "No Command" problem in Recovery mode of my Android?
This applies to you if you experience any of the following:- Phone not restarting/rebooting during update - "No Command" message- Dead Android Robot or Exclamation Point in triangle- Green Android Robot (called "Andi")These are only shown when the Super User Access has been cancelled or denied during the installation process of:- app store (Google Apps Installer widget)- Fairphone OS software updateIn both these cases, you will need to enter Android Recovery Mode and manually finish installation. Tip: it sometimes helps to take out the SIM card(s) and the SD card.If you see a resting robot or an exclamation point in a triangle, then you are currently in this Android Recovery Mode. If you need to enter Recovery Mode.Once you are in Recovery Mode, follow these steps:NOTE: Before starting this step, disconnect all cables you may have connected to your Fairphone. Also, make sure your Fairphone is charged at least 80%.Press the Power button once. A menu will appear.Press and use the Volume Down to navigate down to "apply update from sdcard".Once this option is highlighted in blue, select this option by pressing Volume Up.Use Volume Down to navigate down to "updater". Select with Volume Up.Use Volume Down to highlight "fp_update_OTA[version number].zip" and select with Volume Up.Installation will take place.Once installation is complete you will see the message "Install from sdcard complete."Now you can reboot your phone. "Reboot system now" should be highlighted in blue. Press Volume Up to select it.
Is it safe to clear the data of Google Play services?
Google Play services offers APIs to other apps. Data used by Play services is mostly cached data for these APIs, duplicated data of Android wear apps synched with your phone and some kind of search index. If you delete this data, chances are Google Play services will just recreate it. But you won't delete any of your personal data by deleting Play services data.
What would happen if I insert 1TB external hard disk via OTG in a smart phone?
First, it will probably not spin up since the tablet will not provide enough current. You will need to attach the drive via a powered hub or use a drive with an external power supply. Some portable drives will support attaching a 5V 2A power supply.Once connected in a way that provides sufficient power to the drive, it will be mounted at a place that varies by the phone OS. In Android, you should see the phone at Settings -> Storage.