Highest Gratitude to: Symbian Underground
Some Symbian phones can be fully hacked (which means that you can install anything and switch off the capability restrictions completely), others can only be partially hacked with the HelloOx method, and some phones can not be hacked at all yet. Your hacking options depend on your phone model and firmware version.
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N71 (Japan) (full up to 3.0630.7.06.1, not sure about newer versions)
N71 (China) (full up to 4.0642.1.05, not sure about newer versions)
N73 (full up to 4.0812.4.3.1, not sure about newer versions)
N73 (China) (full up to 10.0.0, not sure about newer versions)
N73-1 (full up to 4.0839, not sure about newer versions)
N73-5 (full up to 4.0814.4.1.1, not sure about newer versions)
N76 (full up to 31.0.014, not sure about newer versions)
N77 (full up to 3.0827.22.0.1, not sure about newer versions)
N78 (full up to 12.046, partial up to 21.002, not sure about newer versions)
N79 (partial up to 20.175, not sure about newer versions)
N80 (full up to 5.0725.0.1, not sure about newer versions)
N81-1 (full up to 11.0.045, not sure about newer versions)
N81-3 (full up to 11.0.045, partial up to version 21.0.010, not sure about newer versions)
N81 (China) (full up to 20.1.016, not sure about newer versions)
N81 8Gb (full up to 20.0.056, partial up to version 21.0.010, not sure about newer versions)
N82 (full up to 20.0.062, partial up to version 31.0.016, not sure about newer versions)
N82 (China) (full up to 20.1.062, partial up to 30.1.019, not sure about newer versions)
N85 (partial up to 20.175, not sure about newer versions)
N91 (full up to 2.20.008, not sure about newer versions)
N91 8Gb (full up to 3.10.023, not sure about newer versions)
N93 (China) (full up to 20.1.058, not sure about newer versions)
N93-1 (full up to 10.0.025 or 20.1.058, not sure about newer versions)
N93i (China) (full up to 30.1.013, not sure about newer versions)
N93i-1 (full up to 30.0.013, not sure about newer versions)
N95 (full up to 30.0.015, partial up to 31.0.017, not sure about newer versions)
N95-3 (full up to 20.2.011, not sure about newer versions)
N95 8Gb (full up to 30.0.018, partial up to 31.2.007, not sure about newer versions)
N96 (partial up to 12.043, not sure about 20.050 or newer versions)
E50 (full up to 7.36.0.0, not sure about newer versions)
E51 (full up to 220.34.37, partial up to 300.34.56, not sure about newer versions)
E51-2 (without camera) (full up to 201.34.38, not sure about newer versions)
E60 (full up to 3.0633.09.04, not sure about newer versions)
E61 (full up to 3.0, not sure about newer versions)
E61i (full up to 3.0633.69.00, not sure about newer versions)
E62 (full up to 3.0633.09.13 and 3.0633.31.19, not sure about newer versions)
E63 (partial up to 100.21.110, not sure about newer versions)
E65 (full up to 3.0633.69.00, not sure about 4.0633.74.00 or newer)
E66 (full up to 102.07.81, partial up to 200.21.118, not sure about 210.21.007 or newer versions)
E70 (full up to 2.0618.07.10, not sure about newer versions)
E71 (full up to 100.07.76, possibly full for 102.07.81, partial up to 200.21.188, partial for 210.21.006 (but check this link), not sure about newer versions)
E75 (partial up to 100.48.78, not sure about newer versions)
E90 Communicator (full up to 210.34.75, partial up to 300.34.84, not sure about newer versions)
3250 (full up to ?, not sure about newer versions)
5320 XpressMusic (full up to 3.08, partial up to 4.13, not sure about newer versions)
5500 Sport (full up to 4.60, not sure about newer versions)
5700 XpressMusic (full up to 5.11, not sure about newer versions)
5800 XpressMusic Tube (partial up to 21.0.025, not sure about newer versions)
5800 XpressMusic Tube (North America) (partial up to 20.2.014, not sure about newer versions)
6110 Navigator (full up to 5.11, not sure about 6.01 or newer versions)
6110 Navigator (China) (full up to 5.12, not sure about newer versions)
6120 Classic (full up to 5.11. partial up to 6.01, not sure about 6.51 or newer versions)
6121 Classic (full up to 5.11. partial up to 6.01, not sure about newer versions)
6210 Navigator (full up to 3.08, not sure about newer versions)
6220 Classic (full up to 3.06, partial up to 4.13, not sure about newer versions)
6290 (full up to 3.03, not sure about newer versions)
Samsung G810 (details here, login or signup required)
Samsung i550, i550w, i560 (full up to xxHH1, not sure about newer versions)
Samsung i8510 INNOV8 (partial up to ?)
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