I was Trying “ESP32 SIM800L: Send Text Messages (SMS Alert) with Sensor Readings” Tutorial on following web link
ESP32 SIM800L: Send Text Messages (SMS Alert) with Sensor Readings
I got following Output and SMS was not sent.
rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT) configsip: 0, SPIWP:0xee clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00 mode:DIO, clock div:1 load:0x3fff0018,len:4 load:0x3fff001c,len:1100 load:0x40078000,len:9232 load:0x40080400,len:6400 entry 0x400806a8 IP5306 KeepOn OK Initializing modem... SMS failed to send
Kindly guide me
D V APTE
BARODA – INDIA
Make sure that your SIM card is active and that it can send SMS. You can experiment it in your phone, for example.
Sometimes the problem with not sending the SMS is the antenna. You may need to replace the original antenna with an improved one. If you live in crowded area, a block of apartments, for example, you may need to go outside to get better signal coverage.
Also, make sure that you’ve inserted the recipients phone number correctly with the country code.
I hope this helps. Without further information, it is very difficult to find out what can be the problem.