So I'm not sure if this has been posted before but its real simple to update both of them using Siri.
For Twitter, text START to 40404 if you are in the US and follow the instructions. When you are done create a contact named Twitter with the 40404 number. Now all you have to do is tell Siri to send a Message to Twitter saying "What you want to Tweet"
Same goes for Facebook. As long as your number is linked through the website on Facebook on your profile. Create a contact named Facebook with the number 32665 associated with it, and all you have to do is say Siri send a Message to Facebook saying "Your status Update".
This works fairly well. The only problem I found was when I activated Siri, and said, Send a Message to Twitter. Normally with a normal contact it would ask me what would I like to say, but in this case, it says it can't send tweets.
So as long as you say Send a Message to Twitter saying "Your Tweet" it works great.
Hope this helps
For Twitter, text START to 40404 if you are in the US and follow the instructions. When you are done create a contact named Twitter with the 40404 number. Now all you have to do is tell Siri to send a Message to Twitter saying "What you want to Tweet"
Same goes for Facebook. As long as your number is linked through the website on Facebook on your profile. Create a contact named Facebook with the number 32665 associated with it, and all you have to do is say Siri send a Message to Facebook saying "Your status Update".
This works fairly well. The only problem I found was when I activated Siri, and said, Send a Message to Twitter. Normally with a normal contact it would ask me what would I like to say, but in this case, it says it can't send tweets.
So as long as you say Send a Message to Twitter saying "Your Tweet" it works great.
Hope this helps