[Nexus 7 Themes and Apps] NLBeev:
When Whatsapp is asking for a telephone number, you have successfully installed it on your tablet.

Whatsapp needs a country code and phone number.

There are 4 possibilities:

1. The combination of country code and phone number is not valid for Whatsapp (no mobile number).

2. The combination of country code and phone number has been used in Whatsapp on another device or with Bluestacks.

3. The combination of country code and phone number is a valid mobile number, it works on a mobile phone, without Whatsapp.

4. Bluestacks is used with Whatsapp. A valid phone number is used and the Whatsapp code is also entered in Bluestacks.

Ad 1. This will not work.

Ad 2. The phone number is valid and has been used with Whatsapp on another device (smartphone).

In that case you have to copy the complete directory "Whatsapp" from the device tot the root of the internal memory of the Nexus 7.

Whatsapp gives the option to use a backup of messages.

After re-installing the backup Whatsapp needs to re-verify the connection.

Ad 3. Valid mobile number not used before with Whatsapp.

You need to enter the country code and phone number with your mobile phone standing by.

Wait till you receive the code on the mobile phone.

Ad. 4. Bluestacks.

When Bluestacks is used with a valid phone number and code you have a problem.

I could not find a method to copy the directory Whatsapp from Bluestacks.

You need a working smartphone with the phone number you entered in Bluestacks.

When on that smartphone is an (old) directory Whatsapp with backup-messages you can try to copy that directory to the root of the tablet.

Remarks.

Whatsapp will not work on more than one device (with the same phone number).

I bought online a prepaid sim-card. This second mobile phone number will only be used with Whatsapp on the Nexus 7 .

Still waiting for the sim-card. I could not test the possibility 3 myself.

UPDATE

Just received my new phone number. I use it for the Nexus 7 only for Whatsapp.

When starting Whatsapp on the Nexus 7 it is asking for a phone number.

Entering a (new) phone number did not work, Whatsapp says it is too old. The same error reported in this thread.

Below my steps to solve this:

a. Sim-card with the new number in my smartphone (HTC HD2) and restart.

b. Uninstall the Whatsapp followed by a re-install.

c. Entered the new phone number. Whatsapp starts to verify.

d. Verify OK. Whatsapp found a backup of the messages and did a restore.

e. Close Whatsapp. Copy the directory 'Whatsapp' from the smartphone to the internal memory of Nexus 7.

f. Nexus 7: Uninstall Whatsapp completely.

g. Re-install whatsapp.apk and secured with Appguard.

h. Start Whatsapp on the Nexus. Entered the new phone number. Whatsapp starts to verify.

i. Verify OK. Whatsapp found a backup of the messages and did a restore.

j. Now Whatsapp is working on the Nexus 7.

k. Smartphone. Changed the sim-card and uninstalled Whatsapp.

l. Reinstall Whatsapp and entered my original phone number. Whatsapp did a verify and restored the messages.

RESULT: two mobile phone numbers and Whatsapp working on smartphone and tablet.

IN SHORT

To install Whatsapp on a tablet you need:

- recent copy of whatsapp.apk on the internal memory of the tablet.

- Appguard, to disable the option "read phone status ....",

- a backup of messages (directory Whatsapp), copied to the root of the internal memory of the tablet;

- a verified mobile phone number by Whatsapp; a phone number that is used before on a smartphone or Bluestacks.

.

Thanks to the first poster for the suggestion to use Appguard.

The developers of Whatsapp should be more user-friendly and make it easier for us to use this great app on tablets.