you may try thi steps:
Power on your device (globe pocket wifi)
On your laptop or desktop connect your wireless device
Open your browser (Google Chrome, Firefox, Internet Explorer etc.) then type 192.168.1.1 on the address bar and hit enter.
You will be prompted to input the Admin password. Just type the default password ‘admin’ then click login.
After successfully logging in on your modem, you will be automatically redirected to Globe Pocket
for change password
Go to Advanced Settings
click on System then click modify password.. After putting up all the password details hit Modify.
also see manual attached on the prepaid pocket wifi: