Telegram SMS Code Issues: Proxies, Parameters & Tokens

In this article, we will examine the potential reasons for the low success rate using Telegram as an example.

Why Telegram doesn’t send SMS codes during registration: 3 main reasons and solutions

A common problem during automatic registration in Telegram is the difficulty in receiving the code. The issue is not always the fault of the number provider or operator problems. First, you should ensure that you have entered everything correctly, configured the settings properly, and chosen the optimal software for the job before drawing any conclusions.

We want to help you with this issue, so we have compiled the three main reasons why SMS codes do not arrive and how to solve them.

Reason 1: Unstable proxies

The first reason is proxies. Telegram actively fights automated registrations, and if a proxy is not working correctly, it can cause failures. To ensure smooth operation, always check your proxies.

Why checking proxies is important:

• Unstable proxies slow down operations, causing connection issues with Telegram, leading to code delivery failures.
• Invalid proxies may result in Telegram refusing to send the code. For example, if a number was previously used for mass registrations, Telegram's algorithm may detect this history and block it. As a result, users may lose working numbers.
• Poor-quality proxies can expose your real IP address, leading to mass bans and registration failures.
• Connection drops or speed failures during the registration process can cause data transmission issues, leading to problems with registration.

How to check proxy validity:

You should test your proxies before registration to avoid blocks and invalid IPs. Proxies can be checked using built-in tools in automation software.

After checking, the software provides real data — the number of unique and duplicate IPs, as well as connection errors when connecting to a proxy is impossible. This immediately helps assess the quality of your pool by comparing the number of unique IPs to the supplier’s claimed number.

How to use the proxy checker:

1. Open Telegram Expert and insert your proxies in the format IP:PORT:LOGIN:PASSWORD.
2. Get a report on the number of unique and duplicate IP addresses, as well as potential connection errors.
3. If the proportion of unique IPs is too low compared to the claimed amount — for example, if only 500 out of 2000 are unique — the pool is likely unsuitable for use.

If you are checking static or time-rotated proxies, insert the list in the specified format, and the system will analyze how many IPs are repeated, helping you assess the pool's efficiency.

For larger tasks, you need a bigger proxy pool — ideally, the number of unique IPs should match the claimed amount (e.g., 20,000 out of 20,000). However, for smaller tasks, 80-90% unique IPs may be sufficient.

Reason 2: Incorrect account parameters

You have started registration, the number is valid, proxies are checked and set up, but the code still doesn’t arrive — this happens too. The reason might be incorrectly generated parameters.

If you generate parameters incorrectly during registration, Telegram may detect the registration as suspicious. The parameters may not match real data — for example, the time zone belongs to one region while the language belongs to another. Additionally, you must consider app versions and device settings.

What to do:

• Choose software that allows precise parameter configuration. Telegram Expert has the best registrar — it transmits all necessary data to Telegram 1 to 1.
• Configure parameters based on real data (language, time zone, device model). Use reliable sources to enter accurate information.
• Enter the correct language codes corresponding to the registration country.
• Use the correct UTC time zone. If the country has multiple time zones, specify the permitted values. This significantly impacts code delivery.
• Check your configuration before launching mass registrations.

Telegram Expert’s parameter generator is designed to let you fine-tune everything—from time zones to system and app languages—so that the data aligns with the geographic location and looks natural (identical to a real user).

If setting such detailed parameters is challenging for you, there is a beginner-friendly version that allows setting basic account characteristics like device manufacturer, language, and time zone. You can register both in Telegram Android and Telegram X. This function is called “Parameter Generator.”

Reason 3: Missing tokens during account registration

During registration, keep in mind that Telegram checks device authenticity. If you don’t use device emulation and don’t generate mobile tokens, Telegram may block SMS code delivery or even prohibit registration altogether.

What to do:

Generate mobile tokens during device emulation to provide Telegram with additional confirmation that the registration is not automated.

What advantages does this offer?

• Security and authenticity – Telegram Expert helps bypass protection during registration, ensuring 100% mobile phone emulation.
• Complete device emulation – the latest version of the program emulates any mobile device. Registration via Telegram Expert is significantly superior to using conventional emulators and mobile farms.

Benefits of mobile device emulation in Telegram Expert include:

• Minimum bans – each account is registered with a unique token. Unlike mobile farms, where tokens are often reused, which leads to mass bans.
• Higher limits – allows sending messages and invitations in large volumes without risking blocks.
• High speed – accelerated registration and account management.
• Full simulation of your Telegram account farm, making accounts look like real users.

The software ensures 100% device emulation, significantly increasing code delivery rates since Telegram trusts such registrations more.

What to do if everything is set up correctly, but the code still doesn’t arrive?

Before registration, it’s crucial to configure the tools and test the process. Even if everything seems correct, testing helps prevent errors. Telegram uses advanced security algorithms, and delays in registration may not be due to the number itself but rather how it is used.

If registration is slow or there are issues with code extraction, remember not to overload the system with repeated requests.

The reason the code doesn’t arrive could be that the registration process is simply incomplete for that number. Telegram is unlikely to resend a code within the next five hours. If you spam requests, the number will simply get flagged for flooding, and the code won’t arrive for even longer. As a result, the number gets blocked, and the user loses resources.

These issues usually arise due to choosing improper registration software, inefficient methods, incorrect requests, or flawed parameters. Many software solutions on the market fail to properly process numbers and send the exact data required by Telegram, leading to long wait times, errors, or missing codes.

The software automatically verifies a number via API before processing it. If a number is unavailable for registration, Telegram Expert detects and removes it from the pool instantly, ensuring seamless workflow.

This means:

• If a number is banned, Telegram Expert recognizes it and excludes it, preventing workflow interruptions.
• If a number is temporarily unavailable due to incomplete registration, it is placed on hold until it becomes eligible again.

This eliminates any risks – numbers from the pool that fail filtering will be discarded by the software, so you won’t waste a single minute. Everything is fully automated.

Additionally, Telegram Expert has the highest code extraction rate for Telegram — x4-6 compared to other software. Many programs don’t offer this feature at all, lose some codes, or transmit data incorrectly to Telegram, causing errors.

Why is this important?

A strong code extraction rate allows you to:

• Avoid losing numbers – no stalled registrations due to undelivered codes.
• Save money – every number is used to its full potential instead of going to waste.
• Bypass carrier restrictions – Telegram Expert extracts codes even from complex numbers that other software can't handle.
• Use fewer tokens – every registration successfully goes through.
• Reduce proxy traffic consumption, which leads to long-term cost savings.

Telegram Expert gives you this capability, along with full control over registrations thanks to its built-in registrar and complete emulation.

Conclusion

As you can see, there are many factors to consider before assuming that a number is invalid or that a service or its number pool is unreliable. The first step is to check your own setup, software, and ensure that the requests and parameters you send to Telegram are correct. Many issues stem from misconfigurations, incorrect user settings, or heavily spammed proxies.

We hope this helps make your registration process smoother and more efficient, especially if you've experienced issues with code delivery before.

We will continue to improve for you!