Hi Nida, I understand how frustrating it is receiving" Toner Low" after replacing the ink cartridge. Brother strongly recommends that customers use only genuine Brother drum units and/or toner cartridges. Each Brother laser printer is designed to work at pre-set temperatures that are matched exactly to each of our individual toner formulations. Each individual component is designed to work with the other to ensure quality and reliability. Using non-Brother supplies may affect the hardware performance, print quality, and machine reliability. The Brother limited warranty does not apply to any problem that is caused by the use of third party drum units, toner cartridges, or toner. Please contact customer support by Email or Live Chat for additional steps that may help. <br />https://www.brother-usa.com/brother-support