The bull float is a flat, long-handled tool used to flatten minor ridges and holes, as well as embed aggregate particles further into the concrete, bringing the smoother "cream" consistency concrete to the surface for better finishing. The bull float should have rounded ends, not flat or straight ends. Avoid using a square float, as it will make smoothing out the concrete more difficult. Move the bull float back and forth across the slab, perpendicular to the direction you moved the leveling board. (In other words, move the bull float between the two forms the 2x4 was resting on.) Slightly lift the leading edge to create a smaller cutting edge of contact, lifting the tool toward you when pushing and away from you while pulling. Some bull floats will have a handle that will lift the tool for you when you turn it. Don't overdo it; the edge of the tool should remain level with the concrete. Try to finish this process before any "bleed water" leaks out onto the concrete's surface. A magnesium float is a short-handled tool that serves the same purpose as a bull float for smaller projects. A "power float" or "helicopter" is a powered tool used on large projects. Move the magnesium float back and forth in overlapping arcs until the whole surface has been covered twice. A power float requires two people to place it carefully onto the slab, but only one to operate it. It takes a little practice to work properly, so stay near the center of the slab while you're learning to avoid damaging the concrete's edge. An edging tool is designed to create level edges and corners next to the form, where your larger bull float or magnesium float is less accurate. This will create more durable edges as well as improve the concrete's appearance. Use a back-and-forth motion in a 1- to 2-ft. (0.30.6m) area before moving on to the next. As with previous tools, lift the leading edge of the tool. Don't press too deeply into the concrete; this can create impressions that are difficult to remove. These are called control joints and direct the concrete's inevitable cracking in such a way that appearance and functionality are minimally affected. These should cut 25% of the way through the concrete's depth. The distance between joints should be no more than 24 times the thickness of the slab. If you are working in the imperial system, calculate this by doubling the thickness of your slab in inches and using that measurement as feet. (For instance, a 4" (10 cm) slab should have joints no more than 8' (2.4m) apart.) Every inside corner of your slab and every corner that touches a building or step should have a control joint extending from it, as these are common cracking locations. Use a straightedge or snap line to lightly mark the joints before cutting and keep your tool straight as you cut. A grooving tool works well for most projects. If your concrete has already started to dry and crack, use a dry-cut saw that can cut to the desired depth. For extra large projects, use a long-handled marking tool. It takes experience to learn the correct timing for concrete, since its drying speed depends on many factors such as the characteristics of the mix and the local temperature and humidity. Here are the basic details: As the concrete sets, excess "bleed water" will rise to the surface. Wait until this water has evaporated and the wet shine of the concrete has started to disappear. If the concrete is still quite wet and forms ridges when you move on to the next step, wait longer. If the concrete becomes too hard and dry to finish properly, throw additional water onto its surface. This is a last resort as it will result in weakness and scaling in the final slab. If you are coloring your concrete using a powder that adds color to the top layer, apply this in the amount specified on the label while the concrete still has a full wet shine. It will still require a little more drying before you proceed to the next stage. Only use on horizontal surfaces and with proper safety equipment to avoid inhalation.
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One-sentence summary -- Immediately level and prepare further using a bull float. Use an alternative tool (optional). Tidy the corners using a smaller tool. Cut grooves into your concrete. Wait for the concrete to partially dry. Apply a color hardener (optional).

Despite its similar name, a hard reset has very different effects than a soft reset. Hard resets restore your phone to its factory state. This means that all of your personal data, including your apps, messages, and contacts, are deleted and your phone becomes essentially a "blank slate." For these reasons, it's generally a good idea to perform a hard reset only when a major problem makes it necessary. Situations that might call for a hard reset include: You experience frequent errors that don't seem to get better with other fixes Your phone's software is corrupted Your phone is infested with viruses or malicious applications you can't seem to get rid of There's no "coming back" from a hard reset, so it's vital that you prepare by making a backup copy of any important files, images, or documents on your phone that you want to keep. Once you perform your hard reset, it's unlikely that you'll be able to get them back. In addition, you'll want to make sure your battery is at least most of the way charged running out of battery in the middle of the hard reset process can lead to serious errors. There are several ways to hard reset your Galaxy Ace. The first is probably the simplest simply go into your phone's settings menu (the icon looks like a silver gear), then tap the "User and backup" or "Backup and reset" option, then finally tap "Factory data reset." You'll be asked to confirm your choice. To recap, the menu options you need to choose are: Settings (looks like a metal gear) User and backup/Backup and reset (name may vary based on the version of your phone's software) Factory data reset Confirm your choice Another way to perform a hard reset on your phone is to type this code into your phone exactly as you would if you were dialing a phone number. Hit the "call" button to start the hard reset process. Note that you should not get a confirmation message with this method. One final way to perform a hard reset is to hold these three buttons while the phone is powered off. Release these buttons when the samsung logo appears. This option is convenient if the problem with your phone is preventing it from starting correctly. Note that you will still need battery charge to do this. Leave your phone alone as the reset process begins. It should eventually boot into a special stripped-down menu with various system options listed. Use the phone's volume keys to scroll to the factory reset option, then press the home/power button to confirm. On the next screen, scroll down to "Yes" and confirm your choice. At this point, your phone will begin to work through the reset process without any further input from you. At this point, all you need to do is wait for the operation to complete. This can take several minutes be patient. When it's done, you may select the "Reboot system now" option from the menu or simply use the power button to restart your phone. After a successful hard reset, your phone should look and behave exactly like it did when you first bought it. It should have only the basic starting apps installed, should use default wallpaper and ringtone options, and so on.
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One-sentence summary --
Use a hard reset as a last resort for serious issues. Charge your battery and back up your important data. Use the "Factory data reset" option under the settings menu. Alternatively, dial *2767*3855#. Alternatively, hold the home, volume up, and power buttons. Select "Wipe data/factory reset" from the recovery menu. Wait for the reset to finish.