You can export your Telegram contacts via Telegram desktop app (Settings -> Advanced -> Export Telegram data).
Open terminal and paste and press enter:
bash run.sh
Open browser and go to: http://localhost:5000/
To convert the exported contacts (JSON file) to a VCF file and import it by your phone, use this script.
Usage python3 telegram_json_to_vcf.py [--add-all] json_file vcf_file Arguments: --add-all: Whether to add all of the contacts or add them one by one json_file: Path to JSON file vcf_file: Path to VCF file
Examples: python3 telegram_json_to_vcf.py --add-all ./contacts.json ./contacts.vcf python3 telegram_json_to_vcf.py ./contacts.json .
Notes JSON file must have UTF-8 encoding. You can specify the VCF file name (see the examples). In case another file exists with the same name, then the VCF file is renamed.