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Is it too troublesome to remove the mobile phone number? Xiaobai can also easily get big files, and it is easy to use for international marketers to test them!

Is it too troublesome to remove the mobile phone number? Xiaobai can also easily get big files, and it is easy to use for international marketers to test them!

  • 2025-08-07

"Help me see which duplicates these two numbers?" "How to automatically deduplicate this Excel table?" "Do you need to manually delete duplicates for 5 million mobile phone numbers?" - This is a problem that international marketing groups are browsing every day.

If you are:

Just entered the industry, I had only a little understanding of Excel functions;
Every time you remove the weight, you have to check the tutorial, the steps are cumbersome and inefficient;
If you get millions of numbers, you will be overwhelmed, for fear of missing or wrong deletion.

Then you must finish reading this article - today we don’t talk about technology, we only talk about the method of deduplication of mobile phone numbers that “newbie can easily operate”, which is especially suitable for scenarios of deduplication of large documents in international marketing.

Stop beating Excel! Xiaobai’s first step is wrong here

Many newbies have the first time to deduplicate, and their first reaction is to open Excel and search for "delete duplicates". But you may not know:

Excel's "Delete Duplicates" feature can only recognize exactly consistent cells. For example, "+819019400002" and "819019400002" are completely different numbers in their eyes and cannot be deleted at all;
What's even more troublesome is that if you have two batches of number files (such as "new collection list" and "old customer list") and need to be compared and repeated, Excel has to manually copy and paste it into a table, and then filter it with functions. The steps are so complicated that you doubt your life.

Real case : Xiaolin, who has just started cross-border e-commerce, used Excel to process 10,000 overseas mobile phone numbers and spent 2 hours to manually check it. In the end, the supervisor said that "200 duplicates were missed" - because her file has two formats: "+1-555-123-4567" and "15551234567" and "15551234567" and "Excel cannot recognize it at all.

Summary : Excel is not bad for use, but is too unfriendly to "international numbers + novices".

Web tools? Passing large files for half an hour, but the result is not accurate

In order to save trouble, many novices can try the web version of the "online deduplication tool". But these tools are not friendly to the "big documents" of international marketing:

File size limit : Most web tools have file size upload limits, and if they exceed them, they will get multiple processing points, which is extremely inefficient in business efficiency;
Function "Unacceptable to the local environment ": Most web tools can only process pure numbers or local format numbers, and cannot recognize country codes, etc.;
Privacy “Naked ”: Passing files containing customer phone calls to unfamiliar web pages is equivalent to "showing privacy online" - in case of data leakage, customer complaints, company accountability, and the one who suffers in the end is yourself.

Real case : Xiaoyu, who is operating overseas social media, used a free web tool to process 50,000 Indian mobile phone numbers. As a result, the tool only identified the "exactly the same" duplicates, missing the duplication of "+91 9876543210" and "+91 98765 43210" (with extra spaces), resulting in repeated sending of subsequent marketing text messages and being complained about by customers.

Summary : Web tools are suitable for "small batches, simple formats" to remove weights, but the "transnational large documents" of international marketing are either "cannot run" or "cannot recognize".

Dingdang Assistant : Easily handle large files and remove heavy weights, and Xiaobai can become a "expert"

If you also want to "not learn technology, not worry about formats, not worry about privacy" and easily get rid of multinational mobile phone numbers, then you must try Dingdang Assistant - an intelligent deduplication software specially designed for global mobile phone numbers, which can be easily used by novice.

Step 1 :
Open Dingdang Assistant and upload the mobile number file you want to process directly to Dingdang Assistant for format processing (with one click to remove spaces, symbols, etc.), so that the data to be deduplicated is in a unified format.

Step 2 :
Select "Single file deduplication" or "Double file contrast deduplication" according to your needs:

Single file deduplication : clean up internal duplication in a batch of numbers;
Dual file comparison and deduplication : For example, if you have a "new collection list" and "old customer list", it can find non-duplicate numbers in the new file and help you accurately filter "valid new numbers".

Step 3:
After the processing is completed, select the format to export the file, and you can get a clean number file with no duplication and uniform format. No need to wait, there will be no lag and crash. One million pieces of data can be handled in 2 minutes, so Xiaobai can easily operate it.

​​Real scene verification​​: Xiaoyu, who just switched to international marketing, used Excel to process 50,000 Southeast Asian mobile phone numbers, but was told by the supervisor that "the format is messy and there are duplications." Now it is easy to do it with Dingdang Assistant , and the supervisor praised it for being "high efficiency".

Conclusion

The key to international marketing is to spend time "understanding customers" rather than "competing with data". Repeating mobile phone numbers seems like a trivial matter, but it directly affects the subsequent marketing effect - repeated exposure will make customers disgusted, and missed deletion and duplication will waste resources.

The existence of Dingdang Assistant allows "Xiaobai to easily handle large transnational documents and remove heavy loads." You don’t have to learn technology, remember formulas, or take safety risks. You can use it by opening it, and it will be effective after using it. When you encounter a messy mobile phone number file, try it - you will find that it is so easy to do heavy weight.

FAQ

Q: How long does it take to process 100,000 pieces of data?
A: The advantage of Dingdang Assistant is that it processes large files smoothly and processs in seconds. It only takes a few seconds to process 100,000 numbers.


Dingdang Assistant is an efficient software designed for global number processing. It aims to help enterprises and individuals quickly and accurately generate, process and collect number data, improve work efficiency and reduce operating costs.

Core functions
Intelligent number processing: number sorting and deduplication/clear non-mobile phone numbers/precisely filter specific number segment data/TXT and VCF format seamless conversion /number comparison deduplication/area code batch addition/automatically distinguish different country numbers...
​Global number batch generation/​Global selected number segments/Bing map public number data collection/​national area code and coding query…
More features are coming soon!

Applicable industries
Dingdang Assistant is widely used in multiple industries and provides customized number data processing solutions for different scenarios:

​Marketing/Customer Service/Sales Team/E-commerce/Finance Industry/Human Resources/Tourism and Hotel Industry/Education Industry/Medical Industry/Logistics and Supply Chain/Technology and the Internet···

Core advantages
​Efficient performance: Process large batches of files in seconds, easily cope with massive data challenges.
​Global coverage: The service scope covers more than 200 countries and regions, and the data is synchronized in real time with the latest International Telecommunications Union (ITU) standards.
​AI-driven: Based on artificial intelligence technology, it realizes intelligent number recognition and comprehensively improves data processing efficiency and accuracy.
​Safety and reliable: enterprise-level data protection system, end-to-end encrypted transmission, ensuring the security and worry-free information.

Dingdang Assistant will continue to iterate and update, launch more powerful functional modules, helping users to be at ease in the global number data processing field, and provide solid support for enterprise digital transformation and business growth.