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T-Call V1.4

T-Call V1.4

ESP32 Wireless Module SIM Antenna Development Board

Regular price $16.03 USD
Regular price Sale price $16.03 USD
Sale Sold out

⚠️Please note that all policy page on site only applies to items purchased from our store:

Relevant technical or usage issues can be also discussed in our GitHub or Community.

About Tax

At present, the price of the platform does not include any tax.
European customers should pay attention to the tax problem after the package reaches the local country, which needs to be borne/handled by the customer, the local policy shall prevail

[orders over 150 euros may generate tax (Amount for reference only), for orders over this amount, we will not inform the customer separately, so please pay attention to it by yourself.]

Commended User

People with programming foundation[engineers / students / makers, etc..]

Shipping & Delivery

Please read the following rules carefully before submitting your order, otherwise, we can't process your order.

  1. For international orders, please make sure the language of the delivery address is in English
  2. For domestic orders (Mainland China), please make sure the language of the delivery address is Chinese.
  3. For Hong Kong, Macau, and Taiwan orders, please provide your tax ID number, or the corresponding ID card number, and the corresponding GUI Number if the recipient is a company name.


Methods & Delivery Time

  1. Standard Express: 25-30 Days
  2. EUB: 25-30 Days
  3. YunTu Express: 10-20 Days
  4. DHL: 10-17 Days
  5. FedEx: 10-17 Days
  6. YanWen: 20-35 Days

Please note that all delivery times are estimated for reference only.

During ship, maybe some methods of transport do not update the logistic track until the parcel reaches the destination country.

If you do not see one of the above shipping methods when checking out, it may be because your country does not support that shipping method, please select one of the available channels already listed or contact us for help.

Please make sure your address is fully filled in (including province and continent, which will affect the shipping time of your order)

For more details please check our shipping policy.

LILYGO® TTGO T-Call V1.4 SIM800L ESP32 Wireless Module SIM Antenna WiFi Bluetooth Development Expand Board Devkit for Arduino


SIM Nano Card Slot Yes [2G]
Clock Speed 240Mhz
Flash 4MB
Wireless Connectivity Wi-Fi: 802.11 b/g/n
Bluetooth: v4.2 BR/EDR and BLE
Button EN
Charging IC IP5306
Serial Chip CH9102
Peripheral Interfaces  I2C、SPI、UART、SDIO、、I2S、CAN
Power Supply

Support USB Type-C / Li-Po Battery Dual Power Supply

JST Connect type : JST PH 2pin 2.0mm

[USB can power the battery]


Supports pin extension of Mic and Speaker 

[Ship without mic and speaker by default]



Connect the power supply, click to start, after the start, click to reset, and click twice to shut down.

Technology Support [Github]

If you need technical support please check the link to find more details.

T-Call SIM800

1. Size

2. Pin Diagram


Due to the working mode of the IP5306 chip, will restart when switching the power supply mode.

If require in the application scenario, recommend buying the AXP192@PMU version. 

Product link will be updated here soon..

T-Call V1.4 Version [CH9102]

1 X T-Call V1.4 

1 X Power Cable(PH 2pin 2.0mm)

1 X SIM Antenna(~7 cm)

2 X Pin

GSM/GPRS Antenna

View full details

Customer Reviews

Based on 3 reviews

All OK !

Mieszko Ślusarczyk
Too many revisions, documentation could be better

This device has so many revisions that it’s hard to guess what hardware does the specific have. Documentation could be better too, especially for less experienced tinkerers with stuff like ESPHome examples

Hi Sir,
Thank you for your feedback.
You can check out our sample code in GitHub before purchasing.
If you have any difficulties with the product, please feel free to contact us by email, our engineers and customer service will help you to solve the problem.

Wish you have a great day.

Veselin Georgiev
excellent device and support

Very nice device.