How many digits are in a Singapore mobile phone prefix? How to filter global mobile numbers?

From format misjudgment to the inefficiency of manual verification, and then to the intelligent leap of ITG's full-domain filtering, my WhatsApp number filtering journey has made me deeply aware of its value.

From format misjudgment to the inefficiency of manual verification, and then to the intelligent leap of ITG's full-domain filtering, my WhatsApp number filtering journey has made me deeply aware of its value.With its advanced algorithms and massive data processing capabilities, WhatsApp number screening can not only efficiently verify number activity but also significantly improve marketing conversion rates.

In the digital marketing arena of 2025, Telegram's number-checking system has become an essential tool for precision marketing, especially when combined with WhatsApp's number-checking technology, which can maximize cross-platform customer reach.Telegram's number filtering system not only efficiently filters invalid numbers, but also uses big data analysis to identify active users, helping marketers avoid wasting resources.Ignoring the importance of Telegram's screening system led to low campaign efficiency, but after introducing ITG's full-domain screening tool, customer reach increased by more than 60%.

In the global wave of precision marketing in 2025, WhatsApp, with its over 2 billion monthly active users and 98% message open rate, has become a core platform for cross-border businesses to reach their customers.However, as the user base expands, issues such as a surge in invalid phone numbers, regional rule differences, and segmented user needs have led businesses into a predicament of "high advertising costs, low reach efficiency, and poor conversion rates."

At this point, professional WhatsApp screening platforms become the key to breaking the deadlock – high-quality WhatsApp screening platforms can filter out real and active target customers from a massive number of numbers, improving marketing accuracy from the source.

As a leading WhatsApp screening platform, ITG Global Screening, with its multi-dimensional identification, global adaptability, and efficient implementation capabilities, has become a core tool for enterprises to achieve "efficient reach + high conversion" in 2025.I went through a lot of detours because I neglected WhatsApp number filtering: from incorrect number formats to inefficient manual verification, until I discovered the ITG global filtering tool, which truly unlocked the secret to efficient number filtering.

From format misjudgment to the inefficiency of manual verification, and then to the intelligent leap of ITG's full-domain filtering, my WhatsApp number filtering journey has made me deeply aware of its value.With its advanced algorithms and massive data processing capabilities, WhatsApp number screening can not only efficiently verify number activity but also significantly improve marketing conversion rates.

In the digital marketing arena of 2025, Telegram's number-checking system has become an essential tool for precision marketing, especially when combined with WhatsApp's number-checking technology, which can maximize cross-platform customer reach.Telegram's number filtering system not only efficiently filters invalid numbers, but also uses big data analysis to identify active users, helping marketers avoid wasting resources.