How to Increase Android RAM with Memory Card?

#I: Does your device supports Swapping?
This process only works if your phone or tablet supports swapping
functionality. In order to verify it, you can simply use this Swap check app.
#II: Partition your SD Card
Hoping that your phone supports the swap function (#1), you'll have to
partition your SD card. Simply, follow the below steps.
1.  On your Computer, download & install the software called 'MiniTool
Partition Wizard'.
2.  By using your card reader, connect your memory card to your PC.
You can also use your phone cable to do so.
3.  Open the MiniTool wizard and select the SD card (the one you've
chosen to allocate for the RAM) > press 'Delete' button. Your memory
card will now be formatted automatically.
4.  Next, right click and choose 'New Partition'. Make sure that the file
system is FAT32and the partition is primary. Also, leave a maximum
of 1GB free space after making the primary partition.
5.  Now, use the 1GB free space to create another partition (primary
mode), but this time with file system EXT2/EXT3/EXT4(choose any
one).
6.  Click on 'Apply' and wait for the partition changes to take place.
#III. Increase your Android Phone RAM
You now have two partitions on your SD card. Place it back in your mobile
(if used a card reader in the earlier steps).
1.  On your Android device, install Link2SDapp; Launch the app and
give root permissions.
2.  Next, choose the .EXTpartition (the second partition you've created in
#2) and leave the rest to the app. It will link the partition.
3.  Now, install another app called 'Swapper for Root' (free to use).
4.  Launch the app and select the amount of RAM you wish to increase.
Once you select the desired size, the app will then create a .SWP file,
which is supposed to be your increased RAM memory.
That's all! You've now successfully increased the RAM on your Android
phone.
One-Click Method to Increase Android RAM (Paid)
The above process is a bit technical and few people may go wrong if not
followed carefully. So, if you don't have issues spending some money ($4
or Rs.240), then my suggestion would be to buy this app called
'ROEHSOFT RAM Expander'.
Sponsored
All you need to do is to check whether your phone supports Swapping or
not. If yes, then simply install this app and bingo... The app takes care of
the rest. Below is a demonstration of how to use the RAM Expander app.
From now onwards, you can enjoy all the high end games without RAM
issues.