Not all fruits can be made in to jelly. Only those that have flavor and a substance called pectin can be transformed into delicious jelly, such as the bignay fruit, papaya, duhat, santol, tamarind and guava. Soursop (guayabano) sininguelas, breadfruit(rimas), anonas and chico all have high pectin content.
Testing Fruit for Pectin
To determine whether a certain fruit can be successfully made into jelly, boil a small amount of its juice with sugar. If it gels, then it is rich in pectin. Updated info here