Might be worth your brother trying these settings:
GPRS WAP & MMS Please note all steps must be completed to ensure the settings are correctly configured.
Please ensure that when entering O2 into the settings that the letter O is selected and not a zero.
When entering the following information do not press Save until told to in the instructions.
Press the Menu key
Tap Settings
Tap Wireless controls
Tap Mobile networks
Tap Access Point Names
Press the Menu key
Tap New APN
Tap Name then tap the text box and enter O2 Pay Monthly then tap OK
Tap APN thentap the text box and enter wap.o2.co.uk then tap OK
Tap Proxy then tap the text box and enter 193.113.200.195 then tap OK
Tap Port then tap the text box and enter 8080 then tap OK
Tap Username then tap the text box and enter o2wap then tap OK
Tap Password then tap the text box and enter password then tap OK
Tap MMSC then tap the text box and enter
http://mmsc.mms.o2.co.uk:8002 then tap OK
Tap MMS proxy then tap the text box and enter 193.113.200.195 then tap OK
Tap MMS port then tap the text box and enter 8080 then tap OK
Press the Back key
Tap Access Point Names
Tap the dot next to your new APN until a green dot appears next to it
Press the Back key four times to return to the standby screen.
SV