You don't need to enable VoLTE. Insert the Jio (VoLTE enabled) in any slot. By default, VoLTE will be active. If it is not, you can change the network preferences from Network option in settings.
You can find full specifications here: iPhone XR
Yes, iPhone XR supports VoLTE. VoLTE or Voice over Long-Term-Evolution is the latest technology in India for high-speed internet and communication. It works on band 3, 5 and 40. Since the iPhone XR supports Band 3 and 40, it supports VoLTE along with 4G.
You can find the complete set of specifications of iPhone XR here: iPhone XR
You can cast your iPhone XR only on an Apple TV.
You can see detailed specifications here: iPhone XR
Then you can head to any online store like Flipkart and Amazon to buy your phone on EMI.
a. Open the App or website on your phone or PC
b. Then select the phone you want to buy and press buy now.
c. Select the Address and Tap on "Continue"
d. Select the "EMI" option as the mode of payment and Click on Continue.
e. Select your bank
f. Select the EMI time period from the options.
g. Enter your card details and make the payment.
You can see detailed specifications here: iPhone XR
Insert SIM card in iPhone XR
You can check the full specs here: iPhone XR
The Apple iPhone XR is a better than phone than the Apple iPhone X as it gives a better processor and at a lower price. Though with the Apple iPhone X, you'll get a better camera and display but the price difference and processor makes the difference.
Processor: The Apple iPhone XR comes with the Apple A12 Bionic processor which is better than the Apple A11 Bionic processor of the Apple iPhone X.
Camera: The Apple iPhone X has a dual-camera setup of 12 MP + 12 MP at the back with dual optical image stabilization and 7 MP at the front, whereas the Apple iPhone XR has only a single camera of 12 MP at the back and 7 MP at the front. The overall quality of the Apple iPhone X is better than The Apple iPhone XR.
Price: The The Apple iPhone XR comes at a price of Rs. 49,900 whereas The Apple iPhone X comes at a price of Rs. 66,499.
The display of the Apple iPhone X is better than the Apple iPhone XR.
Check their full comparison Apple iPhone X vs Apple iPhone XR
You can also check this video for more detailed information.
You can check the complete specs of this phone: iPhone XR
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 GPS
3. 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 life
6. 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 app store constantly connect to the server to check for the updated app. This process drains battery fast. Turn off auto update to prolong battery life
10. 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 prefer
11. 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.
14. Turn on Power saver mode:
You can simply swipe the notification bar and turn on the battery saver mode so that the battery usage is optimized.
You can see full specifications here: iPhone XR