How to enable VOLTE on Xiaomi Redmi Y3 ?

No, Xiaomi Redmi Y3 does not have fast charging. However, some software level modifications might have been done for quick charging.A short video to manage your battery:You can find complete specifications here:  Xiaomi Redmi Y3

Your phone can be used to connect another phone, computer or tablet to connect to the internet using your internet. For sharing the service, another device should be connected via Wi-Fi, Bluetooth or USB. Setting up a Hotspot is really simple as follows:Go to Settings and look for Hotspot and Tethering.Tap and turn on Wifi Hotspot.To change the authentication mechanism or password click Set up Wi-Fi Hotspot. (Select None for open Wifi network with no password) On the other device:Turn on Wi-Fi and search for your own network.Select it and enter a password if required.Note:If another device is connected via USB or Bluetooth, you need to turn on USB tethering and Bluetooth tethering respectively.Watch the video for assistance:You can see detailed specs of product here: Xiaomi Redmi Y3

Xiaomi Redmi Y3 has a non removable battery so for any replacement you should contact to your nearest service center.You can find a service center near you from here.Method to change non-removable battery:You can look at complete specifications here: Xiaomi Redmi Y3

You can follow the below-mentioned steps to save battery:1. Turn off notification from less used apps:Real notifications are handy in some cases like email. But there is plenty of less important app that wants notification permission. Turn off those notification permissions. To do this Go to settings> Notification and status bar> App preferences. Choose and set important push message such as WhatsApp, what are enabled and disable other apps which you don't use often.2. Turn off GPS:GPS is another battery draining cause. Many apps request location permission using GPS. Turn it off to save your battery. You can use Wi-Fi-based location rather than GPS3. Enable battery saver in Security app:In MIUI 8 security apps comes with lots of feature including battery saver. Enable battery saver in security saver to get ultimate battery experiences.4. Set/Adjust Screen Brightness:Automatic Brightness: It is a good choice for adjusting screen brightness. But setting a constant brightness also save battery life. To set constant brightness Personally I prefer constant brightness and you can access them in Settings> Display> Brightness level.5. Turn off vibration on press:Every time you press on phone display it makes vibration. It is obviously power consuming. Turn off vibration on press to prolong battery life6. Turn off Wi-Fi:Turn off Wi-Fi when not needed. It is not mandatory to turn on Wi-Fi 24/7. It consumes huge battery.7. Turn off Sync:Syncing is also drained battery. Though it is important for apps like email but turn it off when not needed. You can turn in off in Settings>Sync.8. Turn off excessive vibration:Vibration kills your battery life. Try to avoid vibration mode. For app notification, you can turn it off in Settings> Notification and status bar> App notification> Choose only apps you want them to vibrate.9. Turn off auto update:Apps like Google Play store and mi app store constantly connect to the server to check for updated app. This process drains battery fast. Turn off auto update to prolong battery life10. Shorten Screen Timeout time:Screen consumes huge battery. You can save some charge by shortening screen timeout time. Head towards Settings> Lock screen and password> Sleep and choose the time you prefer11. Use static wallpaper instead of live wallpaper:You can save some battery by shortening Use static wallpaper instead of live wallpaper Try to avoid live wallpapers.12. Turn on Airplane Mode in low signal areas:Phone consumes most battery in week signal area. So, turn on airplane mode when the signal is too poor.13. Keep phone updated:Updated ROM comes with optimization and bug fixes. So, keep your phone updated to prolong battery life.You can see full specifications here: Xiaomi Redmi Y3

Yes, Xiaomi Redmi Y3 does support USB-OTG Connectivity and you can connect your USB Drive to it.Before you connect the drive using OTG cable, you need to enable OTG support on the device.To enable OTG :Open Settings-> Additional Settings-> OTG connection. Here you need to enable the option.Top 10 uses of OTG that will amaze you:You can find complete specifications here: Xiaomi Redmi Y3