To display all contacts in WhatsApp, including hidden contacts, you can go to the "Settings" menu within WhatsApp. From there, select the "Contacts" option and then choose "Show all contacts" or a similar option that allows you to display hidden contacts. This will make all contacts, including those that are hidden, visible in your WhatsApp contact list. **

To avoid uploading your Facebook contacts, you can go to the "Settings & Privacy" section of your Facebook account. From there, select "Settings" and then click on "Privacy Settings." Next, go to "How People Can Find and Contact You" and then click on "Who can look you up using the phone number you provided?" Here, you can select "Friends" or "Only me" to prevent Facebook from uploading your contacts. Additionally, you can also go to the "Manage Invites and Imported Contacts" section and remove any contacts that have been uploaded. **

To display your Telegram contacts, you can simply open the Telegram app and navigate to the "Contacts" section. Here, you will be able to see a list of all your contacts who are also using Telegram. You can also use the search bar to find specific contacts by typing their name or phone number. Additionally, you can organize your contacts into different categories such as "All contacts," "Telegram contacts," "Non-Telegram contacts," and "Recently joined." **

Both iPhones display the same contacts because they are likely synced to the same iCloud account. When contacts are saved to an iCloud account, they can be accessed and synced across multiple devices that are logged in with the same account. This ensures that any changes made to contacts on one device will be reflected on all other devices linked to the same iCloud account, providing a seamless and consistent experience across devices. **

Currently, there is no direct way to display your Facebook contacts on Instagram. The two platforms are separate and do not have a built-in feature for displaying contacts from one on the other. However, you can manually search for and follow your Facebook contacts on Instagram by using the search function and entering their names or usernames. Additionally, you can sync your Facebook contacts with your phone's address book and then connect your address book to Instagram to find and follow your Facebook contacts who are also on Instagram. **

Yes, you can display contacts on Xing who are already retired. Xing allows users to filter their contacts based on various criteria, including current employment status. By using the advanced search feature, you can specify that you want to see contacts who are retired. This can be helpful for networking with retired professionals or reconnecting with former colleagues who are no longer working. **

To display your iPhone contacts on the homescreen, you can create a contact widget. To do this, long-press on an empty area of your homescreen until the apps start jiggling, then tap the "+" button in the top-left corner. Search for "Contacts" and select the contact widget size you prefer. Once added to your homescreen, you can tap on the widget to select the specific contact you want to display. This allows you to quickly access your favorite contacts directly from the homescreen. **

No, your contacts on WhatsApp cannot see which other contacts you have on the app. WhatsApp respects the privacy of its users and does not provide a feature that allows others to see your contact list. Your contact list is private and only accessible to you. **